Unit Week Subtraction
6 2 Countdowns
Take away 1, 2, or 3. How many are left?
1 2 3 4 5 6 7
7 - 1 = __
7 - 2 = __
7 - 3 = __
1 2 3 4 5 6 7 8 9 10 11
11 - 1 = __
11 - 2 = __
11 - 3 = __
1 2 3 4 5 6 7 8 9 10 11 12 13
13 - 1 = __
13 - 2 = __
13 - 3 = __
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
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