13.73-5.28+4.27-4.72怎样简便算
13.73-5.28+4.27-4.72怎样简便算
原式
=(13.73+4.27)-(5.28+4.72)
=18-10
=8
13.73一5.28十4.27一4.72
=13.73+4.27 - (5.28+4.72)
=18-10
= 8
朋友,请【采纳答案】,您的采纳是我答题的动力,如果没有明白,请追问。谢谢。
20-5.28-4.72怎么简便算
20-5.28-4.72
=20-(5.28+4.72)
=20-10
=10
13.73-5.28+4.27-4.27怎么简算
13.73-5.28+4.27-4.27
=13.73-5.30+0.02+(4.27-4.27)
=13.73+0.02-5.30
=13.75-5.30
=8.45
重点是+4.27-4.27,相互抵消,变成0,;13.73-5.28不太重要,可用简算,也可以不用
3.79+5.28+4.27+4.72简变演算法
=(3.79+4.21)+(5.28+4.72)+0.06
=8+10+0.06
=18.06
5.28+3.6+4.72+6.4【简便计算】
5.28+3.6+4.72+6.4=( 5.28+4.72)+(3.6+6.4)=10+10=20
(5.28+5.28+5.28+5.28)×0.25的简便演算法
应该是
(5.28+5.28+5.28+5.28)×0.25
=5.28×4×0.25
=5.28×(4×0.25)
=5.28×1
=5.28
18.88-4.72-3.28简便算
18.88-(4.72+3.28)=18.88-8=10.88
4.75+4.72—4.75+5.28用简便方法怎样做
4.75+4.72—4.75+5.28
=(4.75-4.75)+(4.72+5.28)
=0+10
=10
5.28-3.5+4.72-2.5的简便运算
5.28-3.5+4.72-2.5
=(5.28+4.72)-(3.5+2.5)
=10-6
=4