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Subtraction strategies: counting back: 1,2,3
description
24 cards·by kassy4
subtractionmath
9-1
8
9-2
7
9-3
6
8-1
7
8-2
6
8-3
5
7-1
6
7-2
5
7-3
4
6-1
5
6-2
4
6-3
3
5-1
4
5-2
3
5-3
2
4-1
3
4-2
2
4-3
1
3-1
2
3-2
1
3-3
0
2-1
1
2-2
0
1-1
0