计算:3500÷7= 450÷9= 96÷4= 329÷8=48÷3= 418÷6≈ 280÷3≈ 466÷8≈
计算下面各题,能简算的要简算 0.87×4.5﹣4.5×0.673.18﹣(0.33+1.18) 1.2+1.47÷0.71.76﹣[(0.74+0.26)÷0.8].
脱式计算,能简算得要简算. 5.45+0.56×7.42.5×0.89×425×16.7﹣25×0.7 7.6×995.6×10.22.5×3.2×1.25 9.6÷0.4×0.253.56×2.8﹣1.24×0.9(12.5+1.25)×8 (2.5×1.7)×412.5×8.80.89×100.1 0.25×0.8×4×0.1258.4×0.26+0.7431.7﹣0.5×0.7﹣1.65.
用简便方法计算. 8.37×7.2+8.37×2.8 12.5×3.9×0.8 1.3+2.9+8.7+0.1 9.6×10.1.
递等式计算(能简算的就简算). (1)3.37+12.89+2.63 (2)513000÷125÷8 (3)39×26+26×61 (4)31.25﹣6.29﹣4.71 (5)130×(300﹣125÷25) (6)2748÷[216÷(155﹣83)].
脱式计算(能简算的要简算) 12.03﹣22.78÷3.44.78×99+4.782.5×6.9×4 28.8÷1.2×0.66.8+3.2÷2.58.6×3.3+2.7×8.6.