1

Name: ............................................................................................

Class: 3 /...................

Primary Three

First term

Mathematics is where numbers fly like pigeons in and out of your head. ~Carl Sandburg

2

Useful sites Place value

http://www.mathbuddyonline.com/lessons/flash/PinkFrame705x460.

php?frame=PinkFrame705x460&path=/lessons/math/numbers/introd

uction/level4/&fileLink=m4h5c1t1p6.html&sampleFlag=1

Extended form http://www.aaamath.com/g31d_px1.html#section2

Ten thousands

http://www.hbschool.com/activity/elab2004/gr4/1.html

Thousands

http://www.toonuniversity.com/flash.asp?err=496&engine=9

Comparing numbers

http://www.ezschool.com/Games/Compare.html

3

Thousands

1) Read the following numbers ,then Put >, <,or =

4592 ………

5136

5859 ………

9434

8503 ………

2766

6791 ………

6491

5577 ………

3090

8165 ………

8615

2) Fill in the spaces as in the following example:

The number The place The value

4 263 hundreds 200

6 789

3 518

3) Complete

1) 3 528 =3 000 + 500 + 20 + 8

2) 7 635 = ……… + ……… + ……… +………

3) 4 903 = ……… + ……… + ………

4) ………… = 7 000 + 90 + 2

5) ………… = 9 000 + 8

6) 0 + 0 + 9 = ……………

I can do it...

Yes!!!!!!!

I can.....

4

4) Complete using < , = or >

a) 7 543 7453 b) 8458 854

c) 1111 999

d) 72 hundreds 756 tens

e) 50 tens 5 hundreds

f) 3 thousands 72 tens

j) 35 hundreds 2 thousands

5) Complete the following table :

Digits The smallest number The greatest number

2 , 7 , 1 , 8

7 , 0 , 5 , 4

6) Arrange each of the following in descending order: a) 6987 , 6978 , 6897 , 6798 , 987

The order is : ………… , ………… , ………… , ………… , …………

7) Complete in the same pattern:

a) 5736 , 5746 ,………… , …………., ………… , 5786,…………

b) 7512, 7612,…………, …………,7912,…………,…………,8212

5

8) Write the following numbers in letters ,(as in a)

a) 5832 (Five thousand ,eight hundred and thirty two)

b) 9843 (………………………………………………………………………………)

c) 8600 (………………………………………………………………………………)

d) 4008 (………………………………………………………………………………)

9) Answer the following questions.

a) What is the smallest 4-digit number? ……………

b) What is the greatest 4-different digit number?

……………

c) What is the smallest 4-different digit number?

……………

d) What is the greatest 4-different digit number and

its unit digit is 7 ? ……………

e) What is the smallest 4-different digit number and

its unit digit is 1 ? ……………

f) What is the smallest 4-different digit number and its

unit digit is 2 ? …………

g) What is the smallest 4-different digit number and

their sum is 12 ? ……………

6

(Lesson 2) Ten Thousands

1) Fill in the spaces as in the following example:

The number The place The value

74 263 Hundreds 200

28 76 5

35 180

60 521

2) Complete as the example

a) 85347 = 85000 + 347

= 80000 + 5000 + 300 + 40 + 7

b) 79815 = ………… + …………

= ………… + ………… + ………… + ………… + …………

c) 70049 = ………… + …………

= ………… + ………… + …………

3)Complete as in the examples:

34215 = 34000 + 215

36544 = 36000 + 544

a) 92641 = ………… + 641

b) 78410 = 78000 + …………

4) Complete

a) 80000 + 3000 + 600 + 20 + 9 = …………

b) 70000 + 8000 +40 +7 = …………

Make your mistakes work

for you by learning from

them. -- Donald Trump

7

5) Complete in the same sequence:

a) 76315 , 76325 , ………… , ………… , …………

b) 34421 , 34321 , ………… , ………… , …………

6) Write the following numbers in digits as in the

following example:

** Fifty four thousand, one hundred and thirty two

( 54132 )

a) Forty thousand , two hundred and seven ( ……………)

b) Seventy two thousand and seven ( ……………)

7) Complete the table:

Number Add 10 Add 100 Add 1000 Add 10000

54902

10943

8) Complete the table:

Number Take

away 10

Take away

100

Take away

1000

Take away

10000

54902

10943

8

9) Complete using < , = or >

77543 97453 95107 9998

10000 9999 47598 9875

forty thousand ,six hundred and three 48029

45 thousand 540 hundred

10) Complete the following table :

11) Arrange the following in descending order:

a) 69087 , 69778 , 68497 , 67398 , 9987

The order is : ………… , ………… , ………… , ………… , …………

b) 83102 , 53203 , 37045 , 82307 , 53023

The order is : ………… , ………… , ………… , ………… , …………

Don't worry about moving slowly,

worry about standing still. -- Chinese proverb

Digits The smallest number The greatest number

3 , 7 , 1 , 9 , 2

9 , 5 , 1 , 7, 0

9

12) Answer the following questions:

a) What is the greatest 5-digit number? ............

b) What is the greatest 5-different digit number? …………

c) What is the smallest 5-digit number ? …………

d) What is the smallest 5-different digit number? …………

e) Write a 5-digit number and its hundred digit

is 7 …………

f) Write a 5-digit number whose tens digit is double its

units digit. …………

g) What is the smallest 5-different digit number and its

tens digit is 5? …………

h) What is the smallest 5-different digit number and its sum

is 10 ?

i) What is the greatest 5-different digit number and its sum

is 35 ? …………

j) Underline the closest number to 50000 (

49999 , 51111 , 50100 )

k) Underline the closest number to 99999

( 10000 , 99990 , 10010 )

l) Underline the closest number to 30000

(30100 , 29990 , 31000 )

10

Activity 1

1) Put the two digits 5 and 7 in the empty spaces in the

number 2 8 3 so that the resulting number is:

a) As great as possible …………

b) As small as possible …………

2) Delete a digit from the number so that the result is: The number As great as possible As small as possible

35648

93726

3) Rearrange the digits of the number 9084 so that the

result is :

a) As close as possible to 1000 : …………

b) As close as possible to 10000 : …………

4) Rearrange the digits of the number 3109 so that the

result is :

a) As close as possible to 1000 : …………

b) As close as possible to 10000 : …………

Important Notes

11

A ) Place value :

Take care of the difference between each of the following

questions :

1) Asking for the place value of certain digit in a number.

2) Asking for the value of certain digit in a number.

3) Changing the form of the numbers .

4) Asking to extend the whole number relating to the value of each

digit.

5) Asking to add the value of each digit with each other. (Opposite

of number 4).

6) Writing the number in (a) letters or ( b ) numeral form

1) Asking for the place value of certain digit in a number.

Example: Find the place value of underlined digit .

a) 4678 Hundreds

b) 75489.....................................................

c) 23396.....................................................

12

2) Asking for the value of certain digit in a number.

Example: Find the value of underlined digit .

a) 2389 80

b) 67430........................................

c) 8769 ..........................................

d) 4360.........................................

3) Changing the form of the numbers .

Substitute the letters with zeros ( 0) based on the next rule

Units →x Tens → 0 Hundreds → 00

Thousands → 000 Ten Thousands → 0000

Example : Complete or compare.

a) 78 hundred ...>.. 980 ( because 78 hundred = 7800)

b) 230 tens =..........................

c) 3 ten thousand....................... 300 hundreds

4) Asking to extend the whole number relating to the value of

each digit.Example :Complete

43678 = 40000 + 3000 + 600 + 70 + 8

a) 2896 =.................+....................+......................+...................

b)56090=................+..................+................+...............+............

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5) Asking to add the value of each digit with each other.

Example :Complete

a) ..36270........= 30000+ 6000+ 200+ 70 + 8

b) ....................= 4000+ 50

c) ....................= 32000+ 30+2

6) Writing the number in : ( a ) letters or ( b )

numeral form

Example

a) writing the following numbers in letters:

34879 Thirty four thousand, eight hundred and seventy-nine

45672............................................................................................

..................

b) Write the following numbers in numerals form :

Thirty one thousand, three hundred and

fourteen.....31314...........

Twenty thousand, three hundred and seventy

five..........................

14

B – Complete in the same sequence

1) Observe which digit is changed ( Tth , Th , H , T or u )

2) Find by how much it is changed and decide either it is

increased or decreased.

3) Work on this digit only but take care in the following cases:

*If we want to decrease the 0 by 1 change it to 9 and decrease the

digit before it by 1.

*If we want to increase the 9 by 1 change it to 0 and increase the digit

before it by 1.

Example : Complete in the same sequence:

*(Take care tens digit decrease by 1,whole 10. )

A) 12915 , 12905 , 12895 , 12885

*(Take care hundreds digit increase by 1, whole 100. )

b) 34865 , 34965 , 35065 , 35165

c) 17654 , 18654 , ..................... , .....................

d) 3488 , 3489 , ……………. , ……………

e) 4568 , 5568 , …………… , …………..

15

Addition

Useful sites:

Normal addition

http://www.free-training-tutorial.com/addition/addition-washington-monument.html

http://www.free-training-tutorial.com/addition/addition-dragons.html

Adding 3 numbers story problems:

http://www.bbc.co.uk/skillswise/numbers/wholenumbers/addsubtract/mental/flash6.shtml

http://www.bbc.co.uk/skillswise/numbers/wholenumbers/addsubtract/mental/flash5.shtml

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Unit 2

(Lessons 1 & 2)

The Meaning of Addition & Finding the Sum 1) Mina has LE 3257 and Karim has LE 4521

What is the total amount of money owned by them?

The total = …………………………………………………………

2) A man bought a house for LE 75643 and bought a car for

LE 21046, How much did he pay ?

He paid …………………………………………………………

3) An elephant weighs 3246 kg. and its baby weighs 1035 kg,

What is the weight of them together ?

The total weight …………………………………………………………

4) Add:

96678

+ 3584

73372

+ 7717

90094

+ 8821

7) Add:

a) 25461 + 34527 = ……………………

b) 27590 + 34515 + 34510 = ……………………

c) 98879 + 7054 + 669 = ……………………..

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(Lessons 3 & 4)

Adding by renaming & Mental Math

1) Find the result of each of the following mentally:

1) 3258 + 1000 = ……………………

2) 64379 + 600 = ……………………

3) 76548 + 2000 = ……………………

4) 45317 + 60 = ……………………

5) 54000 + 317 = ……………………

6) 48000 + 792 = ……………………

7) 586 + 99 =………

8) 586+ 101 =………

9) 54796 + 199 =………

13) 36514 + 9999 =………

Always walk through life as if you have something new to learn and you will. ~Vernon Howard

18

2) Find the result of each of the following mentally using

the equality 12536 + 4916 = 17452

a) 12536 + 5916 = ………………………………

b) 12536 + 3916 = ………………………………

c) 12536 + 4816 = ………………………………

d) 12536 + 4926 = ………………………………

e) 13536 + 4916 = ………………………………

f) 12436 + 4916 = ………………………………

g) 12636 + 4916 = ………………………………

(Lesson 5) Characteristic of Addition

1) Notice and complete:

2 + 7 = 7 + 2 commutative property

36 + 64 = 64 + 36

2156 + 4630 = 4630 + 2156

7314 + 2351 = 2351 + …………

……… + 5723 = 5723 + 98321

6175 + ………… = 8513 + 6175

( 2 + 3 ) + 4 = 2 + ( 3 + 4 ) associative property

( 25 + 75 ) + 37 = 25 + ( 75 + 37 )

( 6452 + 3056 ) + ……… = 6452 + (……… + 4216 )

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2) If 64537 + 17549 = 82086

& 4897 + 5103 = 10000 ,

Then find directly the result of each of the following

:

a)17549 + 64537 =……………

b)5103 + 4897 =……………

c)17549 + 4897 + 5103 =…………… d)64537

+ 4897 + 5103 =……………

e)64537 + 17549 + 4897 + 5103 =……………

3) If 73462 + 8517 = 81979

& 2988 + 7012 = 10000

Then find directly the result of each of the following

:

a)8517+73462 =……………

b)7012+2988 =……………

c)73462+2988+7012 =……………

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4) Find the sum (mentally)

a) 99 + 450 + 1 =……………

b) 998 + 865 + 2 =……………

c) 6000 + 86547 + 4000 =……………

d) 9999 + 13245 + 1 =……………

5) Complete using suitable numbers

a) 1234 + 4579 > 1234 + ………

b) 56730 + ……… < 80000

c) ………… + 10000 > 1000 + 8796

d) 6543 + 9876 = 9876 + …………

e) 19999 + ………… < 20000+ 199

6)Complete using one of the signs <,= and> (mentally)

a) 5342 + 2658 90000

b) 5437 + 345 5417 + 365

c) 739 + 10451 1739 + 10000

The greatest mistake you can make in life is to be continually fearing you will make one. -- Elbert Hubbard

21

7) Arrange the following sets of numbers:

76542 , 67245 , 32590 , 76452 , 67935

Ascending order : ……… , ……… , ……… , ……… , ………

Descending order: ……… , ………. , ……… , ……… , ………

The greatest number is : ………

The smallest number is : ………

The sum of the greatest and the smallest

Numbers = ……… + ……… = ………

8) complete in the same sequence:

a) 7654 , 7754 , ……… , ……… , ……… , ………

b) 8765 , 8665 , ……… , ……… , ……… , ………

I'll never reach my destination, If I never try,

So I will sail my vessel, till the river runs dry.

-- Garth Brooks

22

9) Story Problems:

1) The number of the visitors to Luxor City last Thursday was

4897 and last Friday was 5302 find the number of the visitors

in the two days ?

The number of the visitors = ……… + ……… = ………

2) A governorate built 35627 flats for the limited income

people in one year. The next year, it built another 22543 flats

,Find the total number of flats built during the two years.

The total number of flats = ……… + ……… = ………

3) The donations of hospital in three consecutive weeks were

LE 39824, LE 54350 and LE 43925 Calculate the total of

donations in the three weeks.

The total donations = ……… + ……… = ………

4) Nadia bought a T.V set for LE 1500 and a washing machine

for LE 2763, How much money did Nadia pay?

She paid = ……… + ……… = ………

23

Unit 2 :Activity

1) Complete in the same pattern:

a) 11 , 33, 55, …… , …… , …… , ……

b) 2002 ,3003 ,4004 ,……… , ……… , ……… , ………

c) 1221 , 2222, 3223 , ……… ,……… , ……… , ………

2) Write the greatest and the smallest 4-digit

symmetrical numbers.

The greatest number is …………

The smallest number is ………… 3) Write four symmetrical numbers so that the units digit is

double the tens digit.

The numbers are ……… , ……… , ……… , ………

4) Write three symmetrical numbers so that the tens digit

is 3-times the units digit.

The numbers are ……… , ……… , ……

5) How many symmetrical numbers are formed from 2 digits?

…… ,……, ……, ……, ……, ……, …… , …… , ……

6) Put the two digits 6 and 8 in the empty places in the two

numbers 34 49 and 4 937 so that their sum is as

small as possible and find that sum.

The two numbers are ……… and ………

Their sum is ………

24

Subtraction

Normal subtraction: http://www.ictgames.com/countonconvict.html Difficult http://www.bbc.co.uk/schools/ks2bitesize/maths/number/addition_subtraction/play.shtml Story problems: http://www.bbc.co.uk/skillswise/numbers/wholenumbers/addsubtract/mental/flash7.shtml Money: http://www.bbc.co.uk/skillswise/numbers/wholenumbers/addsubtract/mental/flash2.shtml Mental math illustration: http://www.bbc.co.uk/schools/numbertime/addem/cowboys.shtml

25

Unit 3 (Lessons 1 & 2)

The Meaning of subtraction

Subtracting Two Numbers 1) In a primary school of 643 pupils, the number of boys is

360 .

The number of girls =………… _ ………… = ……………

2) Sami bought a house for LE 80000 .He resold it for LE

90500 ,How much money did he profit ?

His Profit = ………………………………………………………………

3) Ahmed has LE 45000 ,he bought a car for LE 31150

What is the remainder with Ahmed?

The remainder = ………………………………………………………………

4) A football stadium's income is LE 4362 from tickets sales on

Saturday. The week before ,its income was LE 3567

How much was the income in the two weeks?

The income was …………………………………………………………………

5) 4763 people started a marathon race. 187 people did not

finish. How many people finished the race?

The number = ……………………………………………………………

26

(Lesson 3) Subtracting by Renaming

1) Find The Result:

d) 29354

- 1201

e) 9814

- 6557

f) 8831

- 3102

g) 8681

+ 2579

h) 4760

-374

i) 4141

-3353

2) What is the increase of 6549 than 2356?

The increase is ………… _ ............ = …………

3) Find the decrease of 3245 than 7620?

The decrease is ………… _ ............. =…………….

4) Find the difference between 8567 and 3214 ?

The difference is …………… _ .............. =……………

5) Complete in same pattern: a) 8365 , 8355 , ………… , ………… , ………… , 8315

b) 75418 , 74418 ,…………… , 72418 , …………… , ……………

c) 93754 , …………… , 93554 , …………… , 93354 , ……………

Work hard. Someone's always watching. -- Donald Trump

27

(Lesson 4)

The Relation Between Addition & Subtraction

1) Complete:

+ -

=

2) Complete the following :

Look carefully at these questions, then follow the pattern?

a) 7658 + 1000 = 8658 then 8658 - 1000 = 7658

b) 2500 + 3740 = 5000 then ……… - ……… = ………

e) 5190 + 2063 = ……… then ……… - ……… = ………

f) 10000 + 7450 = 17450 then ……… - ……… = ………

The only person who is educated

Is the one has learned how to

Learn and change.

Carl Rogers and Jerome Freiberg

5731

8452

…………………

…………………

28

3) Arrange the following numbers 3426, 3246 ,2346 and

4326 , then complete: The ascending order : ………… , ………… , ………… , …………

The descending order : ………… , ………… , ………… , …………

The greatest number : …………

The smallest number : …………

The difference = ………… _ ………… = …………

4) find the missing number :

67975

+……………

95646

…………

+ 69879

78071

51031

- …………

9856

…………

- 84026

5674

57770

+……………

76104

95144

-……………

35271

29

Mental Arithmetic.

If a – b = c

If a↑ increase , c ↑ increase A and C are Friends

a ↓ decrease , c ↓ decrease

But if b ↑ increase , c↓ decrease A and C are Enemies

b ↓ decrease , c ↑ increase

Examples:

If you know that 20 - 6= 14, find out the result of each of the following

directly without performing the usual subtraction operation:

(a) 19 – 6 = ............

(b) 21 – 6 = ...............

(c) 20 – 5 = ................

(d) 20 – 7 = .................

(e) 20 – 14 = ................

(f) 18 – 6 = .................

(g) 20 – 4 = ...................

30

(Lesson 5) Mental arithmetic

1) Underline the correct answer:

a) 5784 - …………… = 5384 ( 40 , 400 , 4000 )

b) 7845 - …………… = 7815 ( 300 , 3000 , 30 )

c) 45982 - …………… = 43982 ( 200 , 2000 , 20 )

d) 66766 - …………… = 61766 ( 5000 , 50 , 500 )

e) 4375 - …………… = 2375 ( 2 , 200 , 2000 )

f) 37859- 5000 =…………… (37809 , 32589, 37359)

g) …………… - 400 =37255 (77255 , 37295 ,37655)

2) Complete using 101 , 1001 , 10001 as in the following

example:

* 58426 - = 57425

a) 96584 - = 96483

b) 4721 - = 3720

c) 47315 - = 46314

d) 81524 - = 81423

e) 65318 - = 55317

1001

……………

……………

……………

……………

……………

You have not lived a perfect

day, unless you've done

something for someone who will never be able to repay you. -- Ruth

Smeltzer

31

Al Karma Language School

Games on shapes: http://www.primaryresources.co.uk/online/longshape3d.html http://www.bgfl.org/bgfl/custom/resources_ftp/client_ftp/ks2/maths/3d/index.htm http://www.interactivestuff.org/match/maker.phtml?featured=1&id=15 Illustrate the prism: http://www.bgfl.org/bgfl/custom/resources_ftp/client_ftp/ks2/maths/3d/index.htm Angles: http://www.bbc.co.uk/schools/ks2bitesize/maths/activities/angles.swf http://www.innovationslearning.co.uk/subjects/maths/activities/year6/angles/game.asp

32

Unit 4 (Lesson 1)

**Solid Geometric figures**

The

Name

The solid

figure

Number

of faces

Number

of edges

(sides)

Number

of

vertices

Cube

6 (Each is

a square)

12 8

Cuboid

6 (each is

a square

or a

rectangle)

12 8

Triangular

Prism

3 Faces &

2 Bases

9 6

Rectangulr

Prism

4 Faces &

2 Bases

12 8

Squared

Pyramid

4 Faces &

1 Base

8 5

33

Prism

Triangular

Pyramid

3 Faces &

1 Base

6 4

Cone

1 Base 0 1

Cylinder

2 Bases 0 0

The root word is the

Greek prizma which

relates to cutting or

sawing.

34

1) Complete the following : a) The cube has ……… faces , each face is a ………

b) The triangular pyramid has ……… faces, ……… base , ……… edges ,

……… vertices

c) The rectangular prism has ……… faces, ……… base , ……… edges ,

……… vertices

d) The cuboid has ……… faces, ……… edges ,……… vertices

e) Each face of the cuboid is ………… or ……………

f) The cone has ……… base , ……… vertices

g) The triangular prism ………faces, ……… base , ……… edges , ………

vertices.

h) The squared pyramid ……… faces,……… base, ……… edges,

………vertices.

I) The ……… and the …………have the same number of faces , and

edges.

Anyone who stops

learning is old ,

whether at twenty or

eighty.

Henry Ford

35

2) Complete the table below: The

Name

The solid

figure

Number

of faces

Number

of edges

(sides)

Number

of

vertices

…………

6 (Each is

a …………)

………… …………

…………

………… ………… 8

…………

3 Faces &

2 Bases

………… 6

…………

Pyramid

………… ………… 5

…………

Pyramid

3 Faces &

1 Base

6 …………

36

Lesson 2

Measuring the length of a line segment

First: The line segment, The ray & The straight line

1) Name each figure using letters and symbols. 1.

………………………..

……………………..

.

………………………..

…………………….

2) Use your ruler to measure the length of the following

line segments , then complete the table:

F

E B A

L

P

M O

EF AB OP LM Line

segment

………

cm

………

cm

………

cm

………

cm

Length

37

Geometric operations

First: Drawing a line segment :

1) Draw a line segment of the following lengths:

a) 7 Cm

b) 5 Cm

c) 4.5 Cm (1

42 Cm)

d) 6.5 Cm (1

62 Cm)

Second: drawing a squares , rectangles on a lattice.

2) In the lattice, draw each of the following:

a) A rectangle of dimensions

(length is 6 units , width is 4

units).

b) A square of side length 5 cm.

38

c) A rectangle of dimensions (length is 7 units , the width is

3 units).

d) A square of side length 3 cm.

39

Third: Drawing Congruent shapes: 1) A shape is missing from the square,Pick the congruent shape

that completes the square.

1)

2)

2) Draw a congruent figure to each of the following:

40

41

The Visual Patterns

1) Choose ,then complete the pattern.

1.

?

2.

?

3.

?

2) Choose the picture that comes next:

1.

?

2.

?

42

3) Select the shape that comes next in the pattern.

5) Draw the missing shapes to complete the pattern.

6) Draw the missing shape to complete the pattern.

7) Draw the missing shapes to complete the pattern.

9) Select the shape that comes next in the pattern.

43

Lesson 6 (The Angles)

What is an Angle?

Two rays that share the same endpoint form an angle. The point

where the rays intersect is called the vertex of the angle. The

two rays are called the sides of the angle.

Example: Here are some examples of angles.

We can specify an angle by using a point on each ray and the

vertex. The angle below may be specified as angle ABC or as

angle CBA; you may also see this written as ABC or as CBA.

Note how the vertex point is always given in the middle.

44

Degrees: Measuring Angles

We measure the size of an angle using degrees.

Example: Here are some examples of angles and their degree

measurements.

Acute Angles

An acute angle is an angle measuring between 0 and 90

degrees.

Example:

The following angles are all acute angles.

45

Obtuse Angles

An obtuse angle is an angle measuring between 90 and 180

degrees.

Example:

The following angles are all obtuse.

Right Angles

A right angle is an angle measuring 90 degrees. Two lines or

line segments that meet at a right angle are said to be

perpendicular. Note that any two right angles are

supplementary angles (a right angle is its own angle

supplement).

Example:The following angles are both right angles.

46

1) Color the boxes next to the angles ,Acute angles

black and the obtuse blue.

2) Circle the smallest angle

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3) Write the type of each angle as acute, obtuse, straight, or right.

a) b) c)

d) e) f)

i)

g) h)

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Measuring angles Use a protractor to measure these angles and say its type

whether they are acute, obtuse or right angles.

This angle

measures

…………º

It is an …………

angle.

This angle

measures

…………º

It is an …………

angle.

This angle

measures

…………º

It is an …………

angle.

This angle

measures

…………º

It is an …………

angle..

This angle

measures

…………º

It is an …………

angle.

This angle

measures

…………º

It is an …………

angle.

49

Drawing an angle of a known Measure Draw the angles of the following measures ,write the type

a) 90 b) 35

c) 75 d) 180

e) 45 f) 110

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* Complete the table as in a):

The shape Name of

the angle

The

Vertex

The two

sides

a)

A

B C

< ABC

B

BA ,

BC

b)

X

Y Z

………………

………

………,………

c)

O

P Q

………………

………

………,………

d)

K

C F

………………

………

………,………

e)

L

S M

………………

………

………,………

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**Remember that:

a) The unit of measuring angles is a degree (…º)

b) Small angles (less than 90º) are called ACUTE angles

( Its type is an acute angle )

c) Angles bigger than (90º, but less than 180º are called

OBTUSE angles. ( Its type is an obtuse angle )

d) The measure of the straight angle = 180º

e) The measure of the rigth angle = 90º

( Its type is a Right angle )

"Don't be

the one you

see but be

the one you

want to be."