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题型:填空题 题类:常考题 难易度:容易
用9的乘法口诀求商1995 10
{#blank#}1{#/blank#}×2={#blank#}2{#/blank#}
{#blank#}3{#/blank#}×4={#blank#}4{#/blank#}
口诀:{#blank#}5{#/blank#}
= ( )
4×3= 66-45= 70-5= 23-(46-38)=
36+7= 25+65= 23+37= 21+19+34=
5×6= 90-45= 2×2= 6×6-28=
42-8= 6×4= 4×4= 40+(89-54)=
25+21= 5×3= 6×3= 70+2×6=
2×2= 3+3= 45+9=
2×5= 5+3= 67-8=
4×3= 2+4= 8+7-9=
90-50+3890-50+38 9角1元 4×32×6
2×42+2+2+2 19分2角 3+23×2
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