4.58-(2.58+1.5)
2.3÷0.25÷0.4
5.6÷3.5
2.7×0.99
0.125×3.2×0.25
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
1（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