×60%
75÷()
27×()
×+0.75
÷+×0.8
(-)÷
36÷[+(-)]
①5++
②-(-)
③+++
④101×-
⑤-+0.875-0.4
⑥+-
①3××
②÷÷
③27÷×
④6×÷×6
⑤××
(+)×48 23×+8× 8.7×-3.2÷
80× ÷(+) ×1.8+0.25×8.9-25%×0.7
①772-317+128-283
②2.4÷( -20%)
③1-
④5.125× +2.875÷4
⑤