Question

简便计算（1）快快快、在线等、给多少分都行、

3.5×四分之五+125%+1.5÷五分之四
0.9999×0.7+0.1111×2.7
45×2.08+1.5×37.6

Answer 1

3.5×四分之五+125%+1.5÷五分之四
=3.5×0.8+1.25+1.5×0.8
=0.8×（3.5+1.5）+1.25
=4+1.25
=5.25

0.9999×0.7+0.1111×2.7
=0.1111×6.3+0.1111×2.7
=0.1111×（6.3+2.7）
=0.1111×10
=1.111

45×2.08+1.5×37.6
=1.5×30×2.08+1.5×37.5
=1.5×62.4+1.5×37.5
=1.5×（62.4+37.5）
=1.5×（100-0.1）
=1.5×100-0.15
=150-0.15
=149.85

Answer 2

3.5×四分之五+125%+1.5÷五分之四=3.5×5/4+5/4+1.5×5/4=(3.5+1+1.5)×5/4=30/4=7.5

0.9999×0.7+0.1111×2.7=0.1111×9×0.7+0.1111×2.7=0.1111×(6.3+2.7)=0.9999

45×2.08+1.5×37.6=15×3×2.08+15×3.76=15×(6.24+3.76)=150

Answer 3

1式=3.5×0.8+1.25+1.5×0.8=（3.5+1.5）×0.8+1.25=5.25
2式=0.1111×9×0.7+0.1111×2.7=0.1111×（6.3+2.7）=1.111
3式=1.5×30×2.08+1.5×37.6=1.5×（30×2.08+37.6）=150

楼主分数随意给给吧

Answer 4

0.9999×0.7＋0.1111×2.7
=0.1111×9×0.7+0.1111×2.7
=0.1111×6.3+0.1111×2.7
=0.1111×（6.3+2.7)
=0.1111×9
=0.9999

Answer 5

二分之十五
0.9222
150