早教吧作业答案频道 -->其他-->
用简便计算。2.02x8.51.25+4.6+0.751.6x7.5x1.25用简便计算。2.02x8.51.25+4.6+0.751.6x7.5x1.2556x1.253.4x7x1.50.8x0.25x0.4x12.5
题目详情
用简便计算。2.02x8.5 1.25+4.6+0.75 1.6x7.5x1.25
用简便计算。2.02x8.5 1.25+4.6+0.75 1.6x7.5x1.25 56x1.25 3.4x7x1.5 0.8x0.25x0.4x12.5
用简便计算。2.02x8.5 1.25+4.6+0.75 1.6x7.5x1.25 56x1.25 3.4x7x1.5 0.8x0.25x0.4x12.5
▼优质解答
答案和解析
2.02x8.5
=（2+0.02）*8.5
=2*8.5+0.02*8.5
=17+0.17
=17.17
1.25+4.6+0.75
=（1.25+0.75）+4.6
=2+4.6
=6.6
1.6x7.5x1.25
=0.8*2*7.5*1.25
=（0.8*1.25）*（2*7.5）
=1*15
=15
56x1.25
=7*（8*1.25）
=7*10
=70
3.4x7x1.5
= 3.4*（7*1.5）
= 3.4*10.5
=3.4*（10+0.5）
=3.4*10+3.4*0.5
=34+1.7
=35.7
0.8x0.25x0.4x12.5
=（0.8*12.5）*（0.25*0.4）
=10*0.1
=1
=（2+0.02）*8.5
=2*8.5+0.02*8.5
=17+0.17
=17.17
1.25+4.6+0.75
=（1.25+0.75）+4.6
=2+4.6
=6.6
1.6x7.5x1.25
=0.8*2*7.5*1.25
=（0.8*1.25）*（2*7.5）
=1*15
=15
56x1.25
=7*（8*1.25）
=7*10
=70
3.4x7x1.5
= 3.4*（7*1.5）
= 3.4*10.5
=3.4*（10+0.5）
=3.4*10+3.4*0.5
=34+1.7
=35.7
0.8x0.25x0.4x12.5
=（0.8*12.5）*（0.25*0.4）
=10*0.1
=1
看了 用简便计算。2.02x8.5...的网友还看了以下：
化简比.0.5:0.253/7:2/71/6:0.512:360.4:2/5化简比.0.5:0.2 2020-04-07 …
计算下面各题，怎样算简便就怎样算．2.24×16.5÷0.612.6÷0.28-4.556.5×9 2020-04-07 …
用简便方法计算．15-0.3=6-0.5=3.9+12.1=2.13+14=0.91+1.25=1 2020-04-07 …
关于计算内墙砖基础净长上图为某砖基础施工图,试计算内墙砖基础净长：L内=（5.7-0.24）+（8 2020-07-14 …
在○填上“＞、＜或=”．0.25×0.1○0.253.8×9.9○3.8×10-0.122.6×0 2020-07-19 …
1.5分之3-6分之7*14分之52.4又8分之1+1.2353.3又6分之5-2.24.1.25 2020-07-19 …
帮我解下这些题0.0.8------------×6..0--------------1042-- 2020-07-19 …
用简便计算。2.02x8.51.25+4.6+0.751.6x7.5x1.25用简便计算。2.02 2020-07-19 …
开尔文温度与摄氏温度的换算T=500.0；y=(238000/8.3144)/log(55*8.3 2020-07-24 …
解方程．6×0.386.790.360.36÷2.11÷30.33.6×4.22.4×6.36÷0 2020-07-25 …