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Subtraction strategies: think addition
When subtracting from a teen number, think of the related addition fact
20 cards·by kassy4
subtractionmath
16-7
9
16-9
7
17-6
11
17-8
9
17-9
8
13-7
6
13-6
7
12-4
8
12-8
4
11-7
4
11-4
7
15-8
7
15-7
8
11-5
6
11-6
5
14-8
6
14-6
8
13-4
9
11-7
4
15-6
9