①5.4×÷
②0.8×35+64÷+80%
③(-+)÷
④6.75-1+3.25-
⑤33×(-)×26
⑥[-(-)]÷
3×=
3.14×20=
3.6÷0.9=
125%×80=
81÷=
16:8=
99×0.8+0.8=
24.51-2.83-7.17 72÷[960÷(145-65)] 6-÷+ 4.5×+5.5×80%
①0.64+99×0.99+0.35 ②
③25%× ④3.2×125%×25%
①5.58-+5.42-
②64÷+37×40%﹣0.4
③÷[×(0.4÷)]