4.58-(2.58+1.5) 2.3÷0.25÷0.4
0.125×3.2×0.25 3.8×1.01
3.72×9.9+3.72×0.1 0.99×0.81+0.99×0.19+0.99
1.39×25-0.039×250 （4.16+4.16+4.16+4.16）×2.5
（2.5-0.25）×0.4 3.78×99+3.78 65÷（0.65×4）
4.9+0.1-4.9+0.1 5.52-（3.52-0.72）
2.6×0.5+7.4÷2 42.2×103 8.3×99
1.25×2×0.37×4 1.25×8-0.025×80
（2.31+6.69）÷0.03 35.2÷0.25÷0.4 3.6×10.1
6.81+6.81×99 0.25×185×40 3.94+34.3×0.2
2.08×(9.6÷2.4)÷4.8 10-1.8-7.2 0.43+3.57
0.9×0.8 7.28×99+7.28 4.3×50×0.2
9999×0.78+3333×0.66 (3.6×0.75×1.2)÷(1.5×24×0.18)
16.12×99＋16.12 5.2×0.9＋0.9
7.28×99+7.28 4.3×50×0.2 －2.×0.5
26×15.7＋15.7×24 (2.275 ＋0.625)×0.28
(1.25－0.125)×8 4.8×100.1 7.09×10.8－0.8×7.09
9.5×99 13.5×0.98 12.5×8.8
102×4.5 5.6×0.25 8×（20－1.25）
