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题型：填空题 题类：常考题 难易度：容易
8的乘法口诀 1821 10
5×77×8 5＋5＋5＋54×5
32－126×3 6×612
①{#blank#}1{#/blank#} ②{#blank#}2{#/blank#}
7×1 = 6 × 2 = 3×8 = 2×6 =
5×3 = 9 × 3 = 2×7 = 5 × 4 =
8×2 = 4× 8 = 3 ×9 = 7 × 3 =
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