0.25×8.6×4

6.72-3.28- 1.72

0.45+6.37+4.55

5.4+6.9×3-(25-2.5)2×4 1846-620-380

4.8×46+4.8×54

0.8+0.8×2.5

1.25×3.6×8×2.5- 12.5×2.4

28× 12.5- 12.5×20

23.65-(3.07+3.65)

(4+0.4×0.25)8×7× 1.25