六年级数学,10道简便计算题带答案谢谢哦∩_∩

(1)2.64×1.7-2.64×0.7 =2.64×(1.7-0.7) =2.64×1 =2.64 (2)31.5×1.07-3.15×0.7 =3.15×10.7-3.15×0.7 =3.1......

2025-10-09
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