number-bonds/to-50/medium · 套题 80
8 problems
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1
Complete the number bond: 10 1 + __
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2
Number bond: 10 + 8
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3
Number bond: 5 + 3
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4
9 __ + 1
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5
Complete the number bond: 8 __ + 4
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6
5 3 + __
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7
4 1 + __
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8
Number bond: 7 3 + ?
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