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题型:单选题 题类:常考题 难易度:容易
3、4的乘法口诀(2——5的乘法口诀)1604 10
4×{#blank#}1{#/blank#}=2×6
{#blank#}2{#/blank#}×4=8×3
{#blank#}1{#/blank#}
27,24,21,18,{#blank#}1{#/blank#},{#blank#}2{#/blank#},{#blank#}3{#/blank#}
6×{#blank#}1{#/blank#}=18 {#blank#}2{#/blank#}×5=20 {#blank#}3{#/blank#}÷6=5
12÷{#blank#}4{#/blank#}=2 {#blank#}5{#/blank#}÷3=4 16÷{#blank#}6{#/blank#}=4
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