六点九减三点一五括号除以零点三再乘以零点八用简便计算
六点九减三点一五括号除以零点三再乘以零点八用简便计算
化成分数,再把括号展开。就可以都约分掉,最后=10
三点七五除以中括号零点三乘扩号一点三十减零点八四括号中括号的简便算法
3.75÷【0.3×(1.34-0.84)】
=3.75÷【0.3×0.5】
=3.75÷0.15同时乘以100
=375÷15
=25
望采纳
三点九除以零点二五加六点一乘四简便计/算
三点九除以零点二五加六点一乘四简便计算
三点九除以零点二五加六点一乘四
=3.9*4+6.1*4
=4*(3.9+6.1)
=4*10
=40
括号三点二加零点五六括号完了除以零点八简便算法
(3.2+0.56)÷0.8
=3.2÷0.8+0.56÷0.8
=4+0.7
=4.7
六点八除以零点三四乘零点一二七用简便算法
6.8÷0.34x0.127
=20x0.127
=2.54
1.57乘括号零点三除以1.57括号简便
1.57乘括号零点三除以1.57括号简便
1.57乘括号零点三除以1.57括号
=1.57*(0.3÷1.57)
=1.57÷1.57*0.3
=1*0.3
=0.3
三十一点五减去三点一五除以零点三如何简便运算
(31.5-3.15)÷0.3
=31.5÷0.3-3.15÷0.3
=105-10.5
=94.5
零点三七乘零点一二五加零点六三除以八怎么用简便方法计算
0.37*0.125+0.63/8
=0.37*0.125+0.63*0.125
=0.125*(0.37+0.63)
=0.125 .
21.36除以零点八乘以二点九的简便计算
21.36÷0.8×2.9
=21.36÷0.2÷4×2.9
=106.8÷4×2.9
=26.7×2.9
=26.7×(3-0.1)
=80.1-2.67
=77.43
零点五乘括号三减二减零点八括号除以0.15
零点五乘括号三减二减零点八括号除以0.15
0.5x(3-2-0.8)÷0.15
=0.5x0.2÷0.15
=1÷0.15
=6.67