36×(+-) [1-(-)]÷ 2.5×4.8+75×0.48
2.25×+8.75÷+75% 2.87+5.6﹣0.87+4.4 0.25×32×12.5
① + + +
② × + ÷
③3.8×9.9+0.38
④(8+ )÷4
⑤6÷ + ÷6
⑥ ÷[( + )× ]