小数简便运算
1.25×8.37×0.8 0.25×32×12.5
0.15×1999+0.15 6.28×72+2.8×62.8
0.37×1.4 — 0.4×0.37 8.7×9.9
0.86×1.9－0.86×0.9 1.25×8.8
13.7×4.2+58×1.37 3.14×10.1－0.314
19.4－1.28－3.72 1.25×0.25×3.2
31.7×0.9+3.17 2.5×4.6+0.25×46
70.8－7.25－1.75 5.81+8.3+4.19+11.7
4.87×2.34+4.87×7.66 5.6×0.125
7.8×3.2+3.2×2.2 4.27－1.72+0.73－2.28
12.83－（9.5+2.83） 4.16+（5.32－2.16）
7.375－（6.375－5.84） 9.8×0.99
6.2×0.35+0.35×3.8 20.08×1999+20.08 1.2×198－9.8×12 0.38×9.3+0.7×0.38
9.8×5.6－46×0.98 68×0.11+8.9×6.8
2.22×3.8－0.4×4.44 99×0.625+0.625
1.73+1.73×3.5+5.5×1.73 4.2÷3.5
（18.87+18.87+18.87+18.87）×2.5
（7.7＋1.54）÷0.7 0.×100.1
0.32×403 （7.7＋1.54）÷0.7
0.×100.1 12.7×9.9＋1.27
158+45×1.58-5.5×15.8 0.39×199
0.125×72 0.125×16.2×16
12.5×0.96×0.8 3.2×0.25×12.5
126.8÷4.8×2.4 930÷0.6÷5
