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简便计算 28.25-2.35-7.65 125×369×8 32×(1/8+1/4-1/32)
简便计算
28.25-2.35-7.65
125×369×8
32×(1/8+1/4-1/32)
7/9÷11/5+2/9×5/11
人气:201 ℃ 时间:2020-01-30 09:17:31
解答
28.25-(2.35+7.65) =28.25-10 =18.25其它呢125x369x8=125x8x369 =1000x369=369000不是这样吧32×(1/8+1/4+1/32 =32×1/8+32×1/4+32×1/32=4+8+1
=13是我写过100分乘法交换律(7/9+2/9)x5/11=1x5/11 =5/11
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