计算724﹣105×4 (976﹣955)÷3 (4802﹣4466﹣280)÷7.
合理计算 8.6×10.178.1﹣7.7÷0.7×5.2〔(8.1﹣5.6)×0.9﹣1〕×0.4 8.25×4.08+0.75×4.08+4.081.25×32×2.58.1÷2+1.9÷2.
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.