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题型:填空题 题类:常考题 难易度:普通
表内乘法2118 9
{#blank#}1{#/blank#}×3=18 4×{#blank#}2{#/blank#}=20 1×5=10-{#blank#}3{#/blank#}
2×4=8+{#blank#}4{#/blank#} {#blank#}5{#/blank#}×6=24 3×{#blank#}6{#/blank#}= 15
56+8-7+5-6=67
27+5+6-9+7=36
64-6+5-9+7=61
51-8+7-4+8=54
15里面有{#blank#}2{#/blank#}个3?
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