e q u a l concept developed by ivan seneviratne. equal concept the longer bar has the same length as...
TRANSCRIPT
![Page 1: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/1.jpg)
E Q U A L CONCEPT
Developed byIvan Seneviratne
![Page 2: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/2.jpg)
EQUAL CONCEPT
The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find the length of the unknown shorter bar, you need to subtract 8 from 15.
Find the missing number in the blank.Find the missing number in the blank.
8 +8 + ____________ = 15= 15
8 ?
15
15 – 8 = 7
The unknown value is 7.
7
![Page 3: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/3.jpg)
A. _____ + 9 = 17
B. 163 + _____ = 399
C. 7613 695 = 8308
Try theseTry these
EQUAL CONCEPT
PRACTICE
![Page 4: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/4.jpg)
A. ___ + 9 = 17
9?
17
?
399
163
695
8308
7613
SolutionsSolutions
C.C. 7613 695 7613 695 = 8308= 8308
88 17 - 9 = 17 - 9 = 88
B. 163 + ___ B. 163 + ___ = 399 = 399 399 - 163 = 399 - 163 = 236236
236236
++
EQUAL CONCEPT
![Page 5: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/5.jpg)
Find the missing number in the blank.
_____ - 7 = 12
12
The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find the length of the unknown longer bar, you need to add 7 to 12. 12 + 7 = 19
The unknown value is 19.
7 ?
EQUAL CONCEPT
![Page 6: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/6.jpg)
A. _____ - 8 = 17
B. 163 - _____ = 87
C. 3101 1095 = 2006
Try theseTry these
EQUAL CONCEPT
PRACTICE
![Page 7: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/7.jpg)
A. ___ - 8 = 17
8
?
17
? 87
163
1095 2006
3101
SolutionsSolutions
C.C. 3101 1095 3101 1095 = 2006= 2006
2525 8 + 17 = 8 + 17 = 2525
B. 163 - ___ B. 163 - ___ = 87= 87 163 - 87 = 163 - 87 = 7676
7676
--
EQUAL CONCEPT
PRACTICE
![Page 8: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/8.jpg)
EQUAL CONCEPT
After selling 168 tickets,
?
352168
James still had 352 James still had 352 tickets left.tickets left.How many tickets did James have at How many tickets did James have at
first?first?
To find the number of tickets James had at first, you need to add 352 to 168.
168 + 352 = 520
James had 520 tickets at the beginning.
![Page 9: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/9.jpg)
There were 23 fish balls in a bowl.
23
?
7 5
How many fish balls were left in the How many fish balls were left in the bowl?bowl?
Norman ate 7 fish Norman ate 7 fish balls. balls.
Daniel ate 5 fish Daniel ate 5 fish balls.balls.
From the model, you can write down the following equation.
23 - 7 - 5 = 11There were 11 fishballs left in the
bowl.
EQUAL CONCEPT
![Page 10: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/10.jpg)
1. 16 boys and 13 girls took part in a walkathon. If 5 teachers joined them, how many people took part in the walkathon?
Try theseTry these
EQUAL CONCEPT
PRACTICE
![Page 11: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/11.jpg)
1. 16 boys and
16 + 13 + 5 = 34
?
16 13 5
SolutionsSolutions
how how many people took part in the walkathon? many people took part in the walkathon? If 5 teachers joined If 5 teachers joined
them, them,
13 girls took part in a 13 girls took part in a walkathon.walkathon.
There were 34 people who took part in the walkathon.
EQUAL CONCEPT
PRACTICE
![Page 12: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/12.jpg)
2. A clerk was sent to deliver 155 books to a bookshop. On the way, 27 books were destroyed in the rain and 52 books were crumpled. How many books were in good condition?
Try these
EQUAL CONCEPT
PRACTICE
![Page 13: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/13.jpg)
How many books were in good condition?
27 52
27 + 52 = 79
155 - 79 = 76
SolutionsSolutions2.2. A clerk was sent to deliver 155 books to a A clerk was sent to deliver 155 books to a
bookshop. bookshop. On the way, 27 books were destroyed in On the way, 27 books were destroyed in the rainthe rain
and 52 books were and 52 books were crumpled. crumpled.
155
?
There were 76 books in good condition.
EQUAL CONCEPT
PRACTICE
![Page 14: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/14.jpg)
3. In a week, a fruit seller sold 520 apples during weekdays and 798 apples during weekend. If he threw away 57 rotten apples and had 245 apples left, how many apples did he have at first?
Try theseTry these
EQUAL CONCEPT
PRACTICE
![Page 15: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/15.jpg)
3. In a week,
520 798 57 245
The fruit seller had 1620 apples at the beginning.
SolutionsSolutions
?
how many apples did he have at first?how many apples did he have at first?
a fruit seller sold 520 apples during a fruit seller sold 520 apples during weekdaysweekdaysand 798 apples during and 798 apples during
weekend. weekend. If he threw If he threw
away 57 rotten apples and away 57 rotten apples and
had 245 apples had 245 apples left, left,
520 + 798 + 57 + 245 = 1620
EQUAL CONCEPT
PRACTICE
![Page 16: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/16.jpg)
3. In a week,
520
SolutionsSolutions
how many apples did he have at first?how many apples did he have at first?
a fruit seller sold 520 apples during a fruit seller sold 520 apples during weekdaysweekdaysand 798 apples during and 798 apples during
weekend. weekend. If he threw If he threw
away 57 rotten apples and away 57 rotten apples and had 245 apples had 245 apples left, left,
Weekdays
798Weekend
57Rotten
245Leftover
?
520 + 798 + 57 + 245 = 1620
The fruit seller had 1620 apples at the beginning.
EQUAL CONCEPT
PRACTICE
![Page 17: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/17.jpg)
4. Meling spent of her money on
a blouse and of it on a skirt.
What fraction of her money did she
have left?
Try theseTry these
EQUAL CONCEPT
PRACTICE
29
16
![Page 18: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/18.jpg)
5. Hale had 6 watermelons. She gave
2 watermelons to
Bob and 1 watermelons to Verdun.
How many watermelons had she left?
Try theseTry these
EQUAL CONCEPT
PRACTICE
12
34
![Page 19: E Q U A L CONCEPT Developed by Ivan Seneviratne. EQUAL CONCEPT The longer bar has the same length as the sum of the 2 shorter bars. Therefore, to find](https://reader030.vdocument.in/reader030/viewer/2022032517/56649c945503460f94950de0/html5/thumbnails/19.jpg)
This presentation is developed by Ivan Seneviratne © 2006 purely for personal [email protected]