23+4+9= 81﹣7﹣30= 93﹣70+60=
67﹣48= 340+150= 0÷180=
180×0= 60÷30= 50×6=
直接写得数
12.7﹣(8.65+2.7) 92.5×0.25×46.7×0.9+6.7×0.1
8.25×9.9+0.8253.4×8.7+34×0.136.5×1.1
简便计算
12.5×(0.7×0.8)6.25×1.02 1.25×99
12.5×32×2.54.12﹣1.78﹣1.224.2÷0.7÷6.
0.46×7.5+0.46×2.5
3﹣7.14÷3.5×1.05
9.9×8.6+0.86
[20﹣(90.75÷6.6+2.25)]×11.6.
7.02×900×0.6
0.035÷0.7÷0.5
13.6﹣13.6×0.7
5.62+3.1×0.6+3.38
(25﹣1.25×5)÷2.5
8.1×0.3+1.8×0.3+0.03.
199×0.612.5×3.7+4.3×2.50.8×62.3×12.5
5.2×10.10.25×13.7×0.42.5×40.4.