计算(能简算的要用简便的方法计算).
(54+)÷9 | 276×÷27.6 | 9.25×9.9+92.5% |
5.48+8.73+4.52+1.27 | 9.7÷1.25÷0.8 | 0.4×1.25×25×8 |
17.5-4.25-5.75 | 0.125×0.25×32 | (6.3-6.3×0.9)÷6.3 |
(++)÷ | 168.8÷(24.3×2-6.4) | +-(-) |
(+)×20+ | 2500÷+2500× | 375+(5706-5706)÷48 |
÷( +×) | ( +×)÷ | 105×13-1890÷18 |
18×25%+×60+42×0.25 | 1.5×[0.02÷(2.1-2.09)]÷[-(-)]. |
用竖式计算(带★要写出验算过程)
84÷7= | ★91÷3=验算 | 376×4= | 605×6= | 9×450= |