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题型:填空题 题类:常考题 难易度:容易
用7的乘法口诀求商1945 10
算式:÷=
青蛙过河.
{#blank#}1{#/blank#}×5<32 8×{#blank#}2{#/blank#}<45 4×{#blank#}3{#/blank#}<32
5×{#blank#}4{#/blank#}<23 {#blank#}5{#/blank#}×3<16 {#blank#}6{#/blank#}×4<30
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