3.2×2.5×0.125 12.9×101 4.3×2.4+2.4×5.7
3.7×1.4×0.05 12.5×0.4×2.5×8
22×0.24+2.2×2.6
6.9×101
11.43﹣(0.67+2.43)
12.5×3.2
7.7÷2.5÷0.7
36.7﹣3.02×4﹣7.92
99×5.7+5.7
2.4×12.5
3.6+0.12+0.3
4.9×7.6+7.6×0.5+4.6×7.6
0.72+(7﹣4×1.6)
4.11+[(2.5+0.24)×0.5]
(3.8+12.5)× =× ×8
(4.5×3.2)×=3.2×(×4) 3.2×2.5×12.5=×12.5×
①0.53×2.5+
②25×0.032×12.5
③ [()×]
④6.83+17.9﹣0.83+32.1
①25×32×1.25
②(+0.375)÷(×)
③×+÷7
④6﹣(+)
①26×15﹣200
②8×4×12.5×0.25
③×+
④12÷[()×]