1-4 square root.notebook - isd 622

14 square root.notebook December 02, 2013

= =

LT 1ab: p.1I can estimate square roots. I can graph a square root on a number line.

Define:

Define:Principal Square Root

Define:Negative Square Root

Square root is the ____________________ of a square

Define:Perfect Square A number whose principal square root is a _____________.

= =

x2x

Unit 5

________________________________________________________________________

________________________________________________________________________

List all perfect squares between 0100:

List a few NONperfect squares:


Graph Square Roots on a number line

Summary:

How do you estimate a square root? (no calculator)

Use perfect square numbers to estimate.

√26

step 1:

step 2:

DA CB E F

p.2Unit 5

√62 √ 6

√ 4 = √

√ 18 = √ √15 = 23 =

11 = √ 1 16 =

(no calculator)

√ 70

Find the area of the square. Estimate the length of each side of the square.

Squares and Square Roots

8 in

A = 80 in2


p.3Unit 5

For 25, find the value of each square root.

CW p.3 (1, 2, 5, 6, 10, 11, 16) P p.34 (all)

√16

1. List all the perfect squares between 0250.

2.

For 1013, estimate to the square root to the nearest tenth. (no calculator)

For 1415, find the length of the side of a square with the given area.

For 69, find two consecutive integers that each square root is between.

3. 4. 5. √ 425√49 √ 225

6. 7. 8. 9.√84 √ √ √ 11218 8

10. 11. 12. 13.√55 √ √37 62 √104

14. 15.A = 121 ft2 A = 1000 m2

For 1617, estimate the length of the side of a square with the given area. (no calculator)

16. 17.A = 10 m2 A = 150 m2


Wha

t ha

pp

ened

to

the

pla

nt in

Mrs

. She

n's m

ath

cla

ss?

Dire

ctions: For each problem, figure out w

hich consecutive integers the square root lies

between. W

rite the letter of the problem

on the number line between these two integers.

WU R G R

I C

p.4Unit 5


IF Checking:

1. 52

2. 122

3. (3)2

Use Mental Math to calculate each value no calculator.4. ( )2

5. 43

12

Grab an IF sheet from the front.

Box 1


3414


= =

LT 1ab: p.1I can estimate square roots. I can graph a square root on a number line.

Define:

Define:Principal Square Root

Define:Negative Square Root

Square root is the ____________________ of a square

Define:Perfect Square A number whose principal square root is a _____________.

= =

x2x

Unit 5

________________________________________________________________________

________________________________________________________________________

List all perfect squares between 0100:

List a few NONperfect squares:

Inverse Operation

example:

Positive Square Root

negative cannot be inside the sq. root.

whole #


How do you estimate a square root? (no calculator)

Use perfect square numbers to estimate.

√26

step 1:

step 2:

p.2Unit 5

√62 √ 6 √ 70

estimate which one it is closer to

identify the perfect square above and below


Graph Square Roots on a number line

DA CB E F

p.2

√ 4 = √

√ 18 = √ √15 = 23 =

11 = √ 1 16 =

(no calculator)

Find the area of the square. Estimate the length of each side of the square.

Squares and Square Roots

8 in

A = 80 in2


Summary:

Use perfect squares (1, 4, 9, 16, 25, 36, etc.) to help estimate square roots.

x2 and x are inverse operations.√


Show all work.

CW p.3 (1,2,5,6,10,11,16)

p.34 (all)P

2) 4 5) 6) 9 and 1010) ≈ 7.4 or 7.3 11) ≈ 7.9 or 7.816) ≈ 3.2 m or 3.1 m

25

2,5,6,10,11,16

1 1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 225


p.3 answers1, 4, 9, 16, 25, 36, 49, 64, 81, 100, 121, 144, 169, 196, 2251.

2. 3. 4. 5.4 7 15 25

6. 7. 8. 9.9 and 10 2 and 3 4 and 5 10 and 1110. 11. 12. 13.≈ 7.4 or 7.3

≈ 7.9 or 7.8

≈ 6.1 ≈ 10.2 or 10.1

14. 15.

16. 17.

11 ft ≈ 31.6 m

≈ 3.2 m or 3.1 m

≈ 12.2 m or 12.3 m

p.4 answers

It grew perfect square roots.

1-4 square root.notebook - isd 622

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