简便计算 6.2×1.02 1.25 ×99 12.5×32×2.5 4.12-1.78-1.22 4.2÷0.7÷6
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/02 01:27:21
![简便计算 6.2×1.02 1.25 ×99 12.5×32×2.5 4.12-1.78-1.22 4.2÷0.7÷6](/uploads/image/z/445425-33-5.jpg?t=%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97+6.2%C3%971.02+1.25+%C3%9799+12.5%C3%9732%C3%972.5+4.12-1.78-1.22+4.2%C3%B70.7%C3%B76)
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简便计算 6.2×1.02 1.25 ×99 12.5×32×2.5 4.12-1.78-1.22 4.2÷0.7÷6
简便计算 6.2×1.02 1.25 ×99 12.5×32×2.5 4.12-1.78-1.22 4.2÷0.7÷6
简便计算 6.2×1.02 1.25 ×99 12.5×32×2.5 4.12-1.78-1.22 4.2÷0.7÷6
6.2×1.02 =6.2*1+6.2*0.02=6.324
1.25*99=1.25*100-1.25=125-1.25=123.75
12.5*32*2.5=12.5*8*4*2.5=100*10=1000
4.12-1.78-1.22=4.12-(1.78+1.22)=4.12-3=1.12
(4.2/0.7)/6=4.2/(0.7*6)=4.2/4.2=1