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125*3+125*5+25*3+25,怎么计算?
人气:402 ℃ 时间:2020-10-01 20:30:45
解答
125×3+125×5+25×3+25=25×15+25×25+25×3+25=25×﹙15+25+3+1﹚=25×44
=25×4×11=100×11=1100
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