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题型:填空题 题类:常考题 难易度:容易
3、4的乘法口诀(2——5的乘法口诀)1536 10
3×1=
3-1=
2×2=
2+2=
{#blank#}1{#/blank#}
3×1={#blank#}1{#/blank#}
口诀:{#blank#}2{#/blank#}
2{#blank#}1{#/blank#}2{#blank#}2{#/blank#}2{#blank#}3{#/blank#}2=0
{#blank#}1{#/blank#}×6<22 4×{#blank#}2{#/blank#}<40 5×{#blank#}3{#/blank#}<27
8>3×{#blank#}4{#/blank#} {#blank#}5{#/blank#}×9<30 31>8×{#blank#}6{#/blank#}
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