35×72减25×29减35简便计算
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发布时间:2024-10-05 06:51
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热心网友
时间:2024-11-12 10:37
35×72减25×29减35简便计算
35×72-25×29-35
=35*71-25*29
=2485-725
=1760
热心网友
时间:2024-11-12 10:37
原式
=35x72-25x29-35
=10x72+25x72-25x29-25-10
=720+25x(72-29-1)-10
=720+25x42-10
=720+25x40+25x2-10
=720+1000+50-10
=1760
供参考。
热心网友
时间:2024-11-12 10:38
35X72-25X29-35
=35X72-35X29+10X29-35
=35X(72-29-1)+290
=35X42+290
=35X2X21+290
=70X21+290
=1470+290
=1760