7÷ = - = ×6= 24× × =
( + )×4= ÷ = 1+5%= 1÷ =
①( - + )÷
② × + ÷5
③3.2×1.25÷4
④ ×[ ÷( + )]
⑤1-( ÷ )-
⑥ ×66