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题型:单选题 题类:常考题 难易度:容易
9的乘法口诀1893 10
被减数是83,减数是8×9,差是多少?
2×5= 6×3= 4×3= 2×3+19=
80-3= 7+55= 6×2= 3×3+2=
4×6= 5×5= 4×5= 6×6-7=
6×5= 3×5= 87-25= 4×2+45=
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