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
302x25-50,怎样简便就怎样算
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