number-bonds/addition-bonds/hard · 套题 96
8 problems
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1
Complete the number bond: 2 __ + 1
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2
Complete the number bond: 5 __ + 4
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3
Complete the number bond: 3 __ + 2
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4
9 __ + 3
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5
3 1 + __
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6
7 __ + 1
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7
Complete the number bond: 4 __ + 3
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8
8 __ + 2
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