作业帮4. 08x0.25的简便
来源：学生作业帮助网 编辑：作业帮 时间：2024/07/06 00:28:17
（1/8)^3x(1/4)^3x2^6x2^12=2的（-9-6+6+12）次方=2的3次方=8
=3.75-4*0.25*1.2=3.75-1.2=2.55
12.5-12.5×0.2＝12.5×1-12.5×0.2＝12.5×（1-0.2）＝12.5×0.8＝10
2.25x0.16+264x0.0225+5.2x2.25+0.225x20=2.25*0.16+2.64*2.25+5.2*2.25+2.25*2=2.25*（0.16+2.64+5.2+2）=2.
再答：如果满意请采纳谢谢
1.25x0.25x0.05x64=1.25x0.25x0.05x8×8=1.25x8x0.25x(0.05x8)=10x0.25x0.4=2.5x0.4=1
你好：（125+1.25+12.5）x0.8=125×0.8+1.25×0.8+12.5×0.8=100+1+10=111
13.72*0.25+6.28/4=13.72*0.25+6.28*0.25=(13.72+6.28)*0.25=20*0.25=5
1.25X0.7X0.8=1.25X0.8X0.7=1X0.7=0.7希望对您有所帮助
再问：第一题中间那个黑黑的是x号吗再答：对
0.125x4.8x0.25=0.125×8×（0.25×2）×0.3=1×0.5×0.3=0.15
61.6x0.125+9.2x0.25+48.8x5=30.8*0.25+9.2*0.25+48.8*5=40*0.25+244=10+244=254
6.5/4+3.5×0.25=6.5×0.25+3.5×0.25=(6.5+3.5)×0.25=10×0.25=2.5
解题过程如下：=(7.54+2.46)*0.25=10*0.25=2.5希望我的回答对你有所帮助.
12.5x0.25x3.2=（12.5×0.8）x（0.25x4）=10×1=10