①0.74×99
②1.39×6.1+3.9×1.39
③2.4×0.7÷2.4×0.7
④42.72÷0.48+0.52
⑤4.9÷0.25÷0.4
(7.5+2.5×2)×1.4 1.25×3.48×0.08÷0.1
8.7+1.3-0.65+0.35 3.7×10.3-3.7×0.3
8.8×3.7+6.3×8.8
（7.6﹣3.6÷2）×1.5
4.4×2.5
0.25×3.2×12.5
10.6×55.4﹣55.4×0.6
3.7×10.2
1.2÷0.75+18.4
27.5÷2.5÷0.4
（30﹣19.8）÷0.5+31.2
7.28＋3.2÷2.5 6.1×3.6＋3.6×3.9
9.8×25 1.25×0.7×0.8
32.4+2.5÷0.4
5.4×2.7+7.3×5.4
12.5×88
3.6÷[（8.1+1.9）×0.2]