直接写出结果.÷1= ×= 4.4﹣1= +=12×(+)= ÷×= 1×﹣= (1÷1﹣)×75%=3.14×(42﹣32)= 9×10.1﹣9×0.1=
计算,能简算的要简算.0.25×368×40 10.7×16.1﹣15.1×10.7 5×9+7.5 1.2÷[2.5×(4.3﹣2.7)].
选用合适的方法计算:7.5﹣(5.5+1.24) 0.26+15.68+9.74+2.32 13.26+9.55﹣3.26 6.1+3.9﹣6.1+3.9.
科学合理的计算.1.5×8.4+3×0.3+15×10% 30×(+﹣)
怎样简便就怎样计算.4.98+8.02×2.5 60.8﹣40.8÷2.5 0.8×69.6×12.54.98×99+4.9 6.48÷3.2÷2.5 1.2×7.6+7.6×6.8.
脱式计算,能简算的必须简算.12.5×0.25×320 4.57×0.36+4.57×0.64 103×2.478.6÷12.5÷0.8 48×0.25×5 15.72÷(3.8﹣3.2×0.75)