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题型:填空题 题类:常考题 难易度:容易
9的乘法口诀1891 10
口诀
7×8= 8×6= 9×5= 6×6=
2×8= 8×9+9= 9+7= 9×7=
6×8-8= 9×4+4= 9×6+6= 9×5-9=
5×9{#blank#}1{#/blank#}45 2+2+2{#blank#}2{#/blank#}2×2 6×0{#blank#}3{#/blank#}0+6
14{#blank#}4{#/blank#}7×7 3×6{#blank#}5{#/blank#}6+6+6+6 3×5{#blank#}6{#/blank#}4×3+3
25{#blank#}1{#/blank#}5=30 3{#blank#}2{#/blank#}9=27 4{#blank#}3{#/blank#}7=24{#blank#}4{#/blank#}4
55{#blank#}5{#/blank#}12=43 2{#blank#}6{#/blank#}2=1{#blank#}7{#/blank#}4 3{#blank#}8{#/blank#}6<2{#blank#}9{#/blank#}7
5×6= 8×4= 9×3= 7×9= 6×7+8=
82-32= 71-8= 23+6= 42+28= 9×9-30=
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