灵活计算,能简便计算的要简算3.4×5.9+5.9×6.6 54+99×99+45 ﹣(+)
递等式计算,能简算的要简算:9.7﹣22.78÷3.4 1.05÷0.7+18.9 0.4×5÷0.4×521÷0.25÷0.4 0.125×32×0.25 82.2×9.9.
脱式计算(能简算的要简算,没简算的不给分).1.6×55.4﹣55.4×0.6﹣55.4 17.68÷5.2+2.7×1.5 4.8×0.25.
计算,能简算的要简算.3.25×0.45+6.75×0.45 7.5×102 5.64÷0.125÷826.9×0.48÷2.69 5.4×2.5×0.7 39.5×99+39.5.
怎样简便怎样算.7.28﹣(0.8+3.28) 3.15+1.83+6.85+2.17 13.86﹣2.9913.92﹣(3.92﹣2.74) 2.72﹣3.98+5.28﹣2.02 0.27﹣4.9+4.83+2.9.