一、竖式计算
8.5×0.24 0.632×8.55 7.68×3.08
5.8÷2.45 688.8÷56 130.5 ÷0.25
(保留二位小数)
二、用递等式计算(能简便算的简便算)
(25.2-25.2÷4.2)×0.01 48.6÷2.43×2.05
12.8÷3.2×2.83 2.34÷(4.5×0.78÷0.6)
5.3 ×17.5-5.3×7.5 5.4×11-5.4
3.14×0.68+31.4×0.032 7.74×(2.8-1.3)+1.5×2.26
(45.9-32.7)÷8÷0.125 8.9×1.01
7.2×0.2+2.4×1.4 3.9×2.7+3.9×7.3
18-1.8÷0.125÷0.8 21×(9.3-3.7)-5.6
15.02-6.8-1.02 0.86×15.7-0.86×14.7
2.3×16+2.3×23+2.3 9.43-(6.28-1.57)
3.65×4.7-36.5×0.37 46×57+23×86
13.7×0.25-3.7÷4 2.22×9.9+6.66×6.7
7.6×0.8+0.2×7.6 0.85×199