25.4-40.5÷7.5
3.2+0.8÷4
(12-7.2)÷(0.84÷2.1)
1.25×4.7×0.8
32.8×0.2+0.8
0.63×102
①125×1.08
②0.25×16.5×4
③23.8×101-23.8
④7.2×9.9
⑤2.65+3×2.3
⑥1.2×2.5+0.8×2.5
(1)19.5÷2.5×4
(2)5.2×6.4﹣5.4×5.2
(3)0.8×7×1.25
(4)(7.5﹣2.4×0.3)÷0.01
①36×()
②1.3×37.5%+2.7×
③ [()]
④13÷()×