脱式计算,能简算的要简算.
70.8﹣7.25﹣1.75
5.81+8.3+4.19+11.7
0.05×0.4×20×1.7
4.87×2.34+4.87×7.66.
脱式计算(能简算的要简算)
9.8×75+75×0.20.78÷0.25÷40 7.2+2.8×5.0656×10.1.
脱式计算,能用简便方法计算的用简便方法计算.
(1)32×125×2.5(2)94÷(6.84×8.5﹣31.46÷0.55)
计算,能简算的要简算.
1.8×5.46+1.8×4.5416.38÷0.36﹣4.8 0.32×0.25×12.5
0.85+0.2×1.352.8÷3.5×42.64+8.67+1.33﹣1.64.
(1)7.74×(2.8﹣1.3)+1.5×2.26(2)2.22×9.9+6.66×6.7
(3)(1.04×8.05)÷(3.24÷32.4)(4)1.8÷[(9.8﹣4.6)÷0.13﹣39.6]
(5)3.85×1.2+98×0.385﹣3.85(6)15.6×13.1﹣15.6﹣15.6×2.1.