列竖式计算.903÷43= 918÷51= 243÷27=280÷35= 986÷58= 972÷18=
用简便方法计算 .25×2×4×15 99×99+99 146+158﹣46+42 (20+4)×25.
35×(7×3)=35×7+35×3. .
计算下面各题,能简算的要写出简算过程.①6.72+2.08×4×1.5②12.56÷2.5÷0.4③2.85×4.7+28.5×0.53④9.88÷[5×(7.34﹣6.96)]⑤2.5×3.2×1.25⑥0.56×99.
计算下面各题,怎样简便怎样算.0.85×201 0.5×4.85×8 2.5×48﹣482.7+4.29+2.71+6.3 1.2×3.5+8.8×3.5.
能用简算的用简便算法计算,写出简算过程. 5.4×2.08﹣5.4×1.08 7.68×0.25×4 8.2×2.5+17.5 (12.4+16.8)÷0.4.