number-bonds/to-50/medium · 套题 38
8 problems
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1
Number bond: 2 + 1
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2
Complete the number bond: 4 __ + 2
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3
Complete the number bond: 10 1 + __
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4
4 __ + 1
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5
Number bond: 8 1 + ?
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6
9 __ + 1
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7
Complete the number bond: 5 __ + 4
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8
Complete the number bond: 10 7 + __
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