29
+ 28
46
+ 31
52
+ 47
94
+ 16
78
+ 22
56
- 27
130
- 62
59
- 45
58
- 29
78
- 37
3
x 7
6
x 4
3
x 9
8
x 2
4
x 3
6
x 10
3
x 12
7
x 4
3
x 11
2
x 11
main maths
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2001 Teaching Treasures Publications