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1.
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Which double + 1 strategy can you use to add 6 + 7?
a. | 6 + 6 + 1 = 13 | b. | 7 + 7 + 1 = 15 |
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2.
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Which double + 1 strategy can you use to add 8 + 9?
a. | 9 + 9 + 1 = 19 | b. | 8 + 8 + 1 = 17 |
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3.
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Which double - 1 strategy can you use to add 5 + 6?
a. | 5 + 5 - 1 = 9 | b. | 6 + 6 -
1 = 11 |
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4.
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Which double - 1 strategy can you use to add 8 + 7?
a. | 8 + 8 - 1 = 15 | b. | 7 + 7 -
1 = 13 |
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5.
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Use the 10-frames and the counters to add 7 +
5.
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6.
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Use the 10-frames and the counters to add 3 +
8.
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Match the number sentence with the sum.
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7.
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9 + 7
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8.
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3 + 9
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9.
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2 + 6 + 3
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10.
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4 + 3 + 8
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