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9 Cards in this Set
- Front
- Back
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Count up to solve 4+2.
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"4, 5, 6"
4+2=6 |
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Count down to solve 20-7.
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"20, 19, 18, 17, 16, 15, 14, 13"
20-7=13 |
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Count up to solve 9+9.
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"9, 10, 11, 12, 13, 14, 15, 16, 17, 18"
9+9=18 |
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Use the making ten strategy to solve 8+6.
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8+6 = 8+2+4 = 10+4 = 14
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Use the making ten strategy to solve 15-8.
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15-8 = 15-5-3 = 10-3 = 7
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If 6+7=13, then what is 13-7?
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6
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If 19-1=18, then what is 18+1?
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19
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Solve 6+7 by breaking the problem into two, easier problems.
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6+7 = 6+6+1 = 12+1 = 13
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Solve 18-13 by breaking the problem into two, easier problems.
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18-13 = 18-10-3 = 8-3 =5
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