7.5÷(1.5＋3.5)
0.45×3.2×12.5
5.4×1.8＋28.2÷0.3
10－( 0.2＋6.11+0.79 )
8.2×1.1×(4.7-2.7)
13.2÷6－3.8÷4
0.77×0.7＋0.11×5.1
7.5÷(2.5＋2.5)+5
7÷[(0.4＋0.5)×0.6]
13.2×9－3.7×8
0.69×1.05+36×0.56
3×1.1×4.7-2.7
32×3.2×12.5+18
(16.5×6×7.5)÷6
42÷[1.44×(0.1-0.05)]
(17×3+3×7.5)÷6
0.888÷0.888＋0.321×5.1
31.5+24.5+0.8+0.56
4.23×0.21+0.32×2
0.63×1.6+36×1.6
8．9×5.6×5.4-4.5
3.6×9.85-6×2.3
2.8×0.5+3.3×2.1
21+42×21+1
7.8÷7.8×55÷5