4.2(5.25 0.5)怎样简便就怎样算

2020-12-03 21:22:31 字数 1868 阅读 4584

1楼:匿名用户

原式=4.2÷5.25×0.5

=4.2×0.5÷5.25

=2.1÷5.25

=0.4

2楼:快乐小飞的海角

4.2÷(5.25÷0.25)

=4.2÷[(5+0.25)÷0.25]

=4.2÷[5÷0.25+0.25÷0.25]=4.2÷[20+1]

=4.2÷21

=0.2

4.2÷(5.25÷0.25)= ?怎么简便就怎样算

3楼:匿名用户

4.2÷(5.25÷0.25)

=4.2÷[(5+0.25)÷0.25]

=4.2÷[5÷0.25+0.25÷0.25]=4.2÷[20+1]

=4.2÷21

=0.2

希望可以帮到你。

4楼:菀兰隐雪

4.2/21=0.2

4.2÷(5.25÷0.52)的简便方法

5楼:凌月霜丶

4.2÷(5.25÷0.52)的简便方法

4.2÷(5.25÷0.52)

=4.2÷5.25*0.52

=0.8*0.52

=0.416

4.2(5.250.25)简便计算

6楼:乐观的彩梦飞扬

4.2(5.250.25)简便计算bai

一、4.2(du5.25×

zhi0.25)

=2.1×2×5(5.25×0.05)

=2.1×5.25×0.5

=(2×5.25+0.1×5.25)×

dao0.5

=(10.5+0.525)×0.5

=11.025×0.5

=5.5125

二、回4.2÷答(5.25÷0.25)

=4.2÷21

=(4.2×10)÷21÷10

=42÷21÷10

=2÷10

=0.2=1/5

7楼:匿名用户

4.2/(5.25/0.25)=4.2÷(525÷25)=4.2÷21=0.2

4.2除以0.5简便计算

8楼:匿名用户

4.2÷0.5=4.2÷(1/2)=4.2×2=(4+0.2)×2=4×2+0.2×2=8+0.4=8.4

4.75÷0.5+5.25÷0.5简便方法

9楼:匿名用户

4.75÷0.5+5.25÷0.5

=(4.75+5.25)÷0.5

=10÷0.5=20

10楼:匿名用户

利用分配率得:(4.75+5.25)÷0.5=20

11楼:匿名用户

4.75÷0.5+5.25÷0.5简便方法=(4.75+5.25)÷0.5

=10÷0.5=20

4点2÷(5点25÷0点25)的简便方法

12楼:新野旁观者

4.2÷(5.25÷0.25)

=4.2×0.25÷5.25

=1.05÷5.25

=0.2

4.2除(5.25除0.25)怎样列式计算

13楼:妙酒

4.2÷(5.25÷0.25)

=4.2÷21

=0.2

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