45÷ = ×16= × = 0÷ = ×6÷ =
÷ = 5÷ = ×75%= × = + × =
① ÷4×
②1- ÷ -
③ × - ÷
④12×( + )
⑤ ÷( + )
⑥ ×1.25×51×8