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题型:填空题 题类:常考题 难易度:普通
7的乘法口诀1800 10
8×7={#blank#}1{#/blank#}
口诀:{#blank#}2{#/blank#}
20>{#blank#}1{#/blank#}×7 {#blank#}2{#/blank#}×5<38
{#blank#}3{#/blank#}×5<35 7×{#blank#}4{#/blank#}<45
× = × = × =
÷ = ÷ = ÷ =
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