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题型：填空题 题类：常考题 难易度：困难
6的乘法口诀 1777
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用口诀：{#blank#}2{#/blank#}
6×{#blank#}1{#/blank#} ={#blank#}2{#/blank#}
3×{#blank#}3{#/blank#} ={#blank#}4{#/blank#}
口诀：{#blank#}5{#/blank#}
2×5 = 4 × 6 = 5 ×3 = 8 ×5 =
5 +5 = 5×5 = 3 × 5= 2 ×9 =
7×4 = 3×6 = 6×5 = 4 ×1=
4× 8 = 7 ×3 = 4 × 4 = 4 + 4 =
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