①13×8×125
②637﹣47﹣353
③23×101
④72+28×23
⑤600÷[(72﹣57)×5]
⑥53×99+53
20-5.28-4.72
5.01-1.9+4.99
25×37+35×37
98×12÷21
60÷80%= 75%+0.25= = =