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题型:填空题 题类:常考题 难易度:容易
6的乘法口诀1761 10
54,60,66,70,72
6×9◯5×9 9+9◯9×9
6×6◯4×9 9×5◯8×6
5×6= 79-7= 2×3= 6×9=
6×4+6= 2×5-5= 5×3+2= 4×4+2=
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