Homework Math Sheets 1-25 - Y5, The Alderton Junior School Page 22
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25Name: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Y5
Homework Sheet 22: Informal Method for Subtraction
Examples
8 2 4
8 2 4
4 5 9
4 5 9
Counting up
41
Compensation
3 2 4
(to make 500)
(8 2 4
500)
3 2 4
4 1
(to make 824)
(500
4 5 9 )
3 6 5
3 6 5
Use counting up.
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1
3 6 3
3
2 2 5
5
5 7 4
7
6 0 7
1 8 8
1 6 7
3 5 5
2 3 8
. . . . . . . .
. . . . . . . .
. . . . . . . .
. . . . . . . .
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2
7 2 1
4
4 1 3
6
5 2 2
8
9 5 0
3 4 9
2 9 4
2 7 9
3 5 3
. . . . . . . .
. . . . . . . .
. . . . . . . .
. . . . . . . .
Use compensation.
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9
6 3 4
11
8 4 0
13
4 5 1
15
7 2 3
4 7 5
3 3 6
1 8 7
5 4 5
. . . . . . . .
. . . . . . . .
. . . . . . . .
. . . . . . . .
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10
9 4 2
12
7 3 6
14
8 4 5
16
3 5 2
2 5 6
1 2 8
5 6 6
2 5 7
. . . . . . . .
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17 Steve fired 615 arrows but only 184 hit the target.
How many missed the target?
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