1.69÷1.3+2.5×0.4
15.8×0.6+15.8×0.4
96.5×105﹣5×96.5.
计算下面各题,能简算的要简算.
①35×1.25×2×0.8
②4.8÷(1.2+0.4)
③3.9×10.1.
④78+3.78×99
⑤(7.7+1.547)÷0.7.
(1)125×3.2(2)4×6.2×2.5(3)12.8×9.9
(4)10.1×4.8﹣0.48(5)24÷16(6)15﹣3.8﹣6.2
脱式计算(用自己喜欢的方法计算).
102×4.5=4.5×7.3+2.7×4.50.85×0.4×2.5
8×(20﹣1.25)125×0.32×25(15.6+1.32÷0.3)×0.5.
计算,能简算的要简算.
0.75×18÷0.15
6.5×9.9
5.79÷0.125÷0.8
9.07+22.78÷3.4
4.7×0.12+4.7×0.88
12.5×8×0.025×4.