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Find a Fraction of a quantity.

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by

Mr Mattock

on 31 August 2015

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Transcript of Find a Fraction of a quantity.

Find a Fraction of a quantity.
Starter
Finding a fraction of a quantity
Non-unit fractions
Find 3 of 56
L.O. - To find a fraction of an
amount (Level 5/Grade 2)

0
1
What fraction do you see shaded here?
If the number at end was 18 instead of 1, how far along would the purple rectangle be?
Find 1 of 18.
6
0
1
0
18
7
0
1
0
56
Calculating a Fraction of an Amount
Finding a fraction of a quantity
Find 1 of 18.
6
0
1
0
18
1
6
3
18/6 = 3
1
7
2
7
3
7
8
16
24
Non-unit fractions
Find 3 of 56
7
0
1
0
56
Non-unit fractions
Find 5 of 108
9
0
1
0
108
1
9
2
9
3
9
4
9
5
9
12
24
36
48
60
108/9 = 12

12 x 5 = 60
Non-unit fractions
Find 5 of 108
9
0
1
0
108
56/7 = 8

8 x 3 = 24
Calculating a Fraction of an Amount
63/7 = 9

6 x 9 = 54
72/9 = 8

7 x 8 = 56
Key examples
Worked
Examples

Worked
Examples

Worked
Examples

Worked
Examples

Main Activity 1
Red
: Draw these bar models and use them to solve the problems.
1
5
of 45
1
9
of 54
1
8
of 96
Amber
: Draw these bar models and
use them to solve the problems.
3
5
of 45
8
9
of 54
5
8
of 96
Green
: How many problems can you come up with that have whole number solutions that can be represented on this bar model?
Main Activity 1
Red
: Draw these bar models and use them to solve the problems.
1
5
of 45
1
9
of 54
1
8
of 96
Amber
: Draw these bar models and
use them to solve the problems.
3
5
of 45
8
9
of 54
5
8
of 96
Green
: How many problems can you come up with that have whole number solutions that can be represented on this bar model?
= 9
= 6
= 12
= 27
= 48
= 60
Starter
0
1
What fraction do you see shaded here?
If the number at end was 18 instead of 1, how far along would the purple rectangle be?
3
1
6
Finding a fraction of a quantity
Find 1 of 44.
4
0
1
0
44
Finding a fraction of a quantity
Find 1 of 44.
4
0
1
0
44
44/4 = 11
Worked
Examples

Bingo
Choose 9 whole numbers from 1 to 20 inclusive.

Answer the questions for BINGO!!!!!
Activities
Activity Answers
Full transcript