4.4 -(2.5+1.9)×(0.5-0.5)
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4.4-(2.5+1.9)×(0.5-0.5)4.4-(2.5+1.9)×(0.5-0.5)4.4-(2.5+1.9)×(0.5-0.5)=4.4-(4.4x(0))=4.4-0=4.4答案是4.4-
4.4 -(2.5+1.9)×(0.5-0.5)
4.4 -(2.5+1.9)×(0.5-0.5)
4.4 -(2.5+1.9)×(0.5-0.5)
=4.4-(4.4x(0))=4.4-0=4.4答案是4.4-0=4.4
4.4 -(2.5+1.9)×(0.5-0.5)
=4.4-4.4x0
=4.4-0
=4.4
4.4 -(2.5+1.9)×(0.5-0.5)
4.4 -(2.5+1.9)×(0.5-0.5)
请问下面这几道题应该怎样简便计算?要具体的过程,(1)(1.6+1.6+1.6+1.6)×25(2)四又五分之二-(2.5+1.9)×(0.5—0.5)(3)四又五分之二-2.5+1.9×(0.5-0.5)(4)四又五分之二-2.5+1.9×0.5
2.5x(1.9+1.9+1.9+1.9)=?
第一道:6.1X-12=1.9X+11.1第二道:2(0.5-x)+6=3x-2.5
0.46×1.9+0.5×1.9简算
0.4 0.45 1.9 2.8 0.8 0.120.4 0.45 1.9 2.8 0.8 0.12 8.5 3.2 5.6 2.5 4.4 1.5 8.1 25.5都画分数
2.5乘4.4进行简算是()*()*()
2.5x(1.9+1.9+1.9+1.9)的简便运算
16.6*7.5*4.8/(4.4*3.3*2.5) 简便计算
6.6*7.5*4.8/(4.4*3.3*2.5) 简便计算
(2.5+1.25)/0.5简算
2.4(x+1.9)÷0.5=48
2.5+6.3+1.9简便计算
7.5*2.3+1.9*2.5(简算)
比最小的两位数小0.5的数乘2.5,所得的积再除以1.9,商是多少?
4.4×12.5×2.5 简便计算
6.3×10.3简算.0.98×3.2简算,2.5×4.4×0.7简算,5.8×8.5+5.8×0.5+5.8的简算.