用竖式计算(前面带星号的要验算) 7.02﹣4.36 14.53+5.67 ★6.47+0.58.
灵活计算下面各题.(1)4.87×1.25×0.8 (2)(5.6﹣5.6×0.7)÷22.4(3)3.7×9.9 (4)8.56×7.5+8.56×2.5.
怎样简便就怎样算35.6+(12.6﹣4.4) 90÷0.4÷2.5 0.86×15.4﹣14.4×0.865.4÷0.6+(2.3﹣0.46) 7.52×10.1 1.25×0.7×0.8.
计算,能简算的要简算.(4﹣7.5×4)÷6 0.24÷+0.25×4 2.8×1.2÷4 45÷72÷1.257.2+[(7.8+2.2 )÷0.4].
用你喜欢的方法计算下面各题(能简算的要写出简算的过程).4.32﹣2.4×1.6 3.18+3.18×99 (53.76﹣17.49)÷1.8 0.25×3.2×1.25.
计算下面各题,怎样算简便就怎样算.6.15+4.9﹣9.85 1500÷25÷4 19.92﹣(14.37﹣5.43)432﹣(361+153÷17)142+35×6﹣315 27×13+72×13+13.