25%×+× ×60%÷ 0.25++75%+87.5%
+×- ×101-0.6 (-20%)÷80%
120%0.12 1175% 4.5×4.5
⑴ ⑵ ⑶ ⑷ ⑸ ⑹
+÷ 25%×28+×72 ÷× (+)×4×3