脱式计算，能简算要简算。8.4×0.6+9.432×1.25×0.253.75×10.23.9×8.2+1.8×3.9

3.45×102 (1.72+1.72+1.72+1.72)×2.5

3.17+0.83×1.6 70.8×0.27+7.08×7.3

(4.3-0.5)×0.125 $\text{[math]}$

6.2×3.8 + 6.2×6.2 8.45-0.45×0.1 125×3.2×25

0.73×102 25×(4+8) ×125 76.3×27-7.63×170

0.25×3.7×40 7.86×99＋7.86

8.42×4×2.5 5.2×7.8-6.8×5.2

(1.25-0.125)×8 99×2.4

5.2×6.4+4.8×6.4 0.5×4.8×1.25 6.36×7.5+0.75×36.4

①0.8×62.3×12.5 ②99×7.4＋7.4 ③0.64×45＋3.6×4.5

8.4×0.6+9.4	32×1.25×0.25
3.75×10.2	3.9×8.2+1.8×3.9