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4x8x16x125的简便运算
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4x8x16x125=4x125x8x16=500x8x16=4000x16=64000
咨询记录 · 回答于2023-03-17
4x8x16x125的简便运算
4x8x16x125=4x125x8x16=500x8x16=4000x16=64000
4x8x16x125的简便运算4x8x16x125=4x125x8x16=500x8x16=4000x16=64000
39x202
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39x202=39x(200+2)=39x200+39x2=7800+78=7878
简便计算39x202=39x(200+2)=39x200+39x2=7800+78=7878