①0.8×62.3×12.5 ②99×7.4+7.4 ③0.64×45+3.6×4.5
50.3+2.7×0.2 3.9×5.2+3.9×4.8
21.23-4.1×0.6-6.54 12.5×7.5×0.4×0.8
[10-(5.3+3.9)]×8.5 0.57x 99
0.125×32
3.87×6.35+3.87×3.65