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题型:解决问题 题类:常考题 难易度:普通
8的乘法口诀 1835 10
口诀:( )
8{#blank#}1{#/blank#}8=16 5{#blank#}2{#/blank#}8=40
5×{#blank#}1{#/blank#}=35
{#blank#}2{#/blank#}×7=21
7×{#blank#}1{#/blank#}=49
7×{#blank#}2{#/blank#}=56
{#blank#}3{#/blank#}×7=35
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