×60%
75÷()
27×()
36×()= ÷3= 25%+(-12.5%)÷=
25%× + ×25%
( - )×48
12×( +)
2.8×25+12×2.5
①75%×+×75% ②7×(×) ③(+)÷×
37.5×+37.5×62.5%+62.5×0.75