①
②
③
④
⑤
⑥
① × + ×
② ×34×17×
③( - )×12
④ ×( + )+
⑤ ×101-
⑥ -( + )
= = = =
① -( - )-
②875-375÷25
③12.5×32×0.25
④48×75%+53× -0.75
①5.8﹣1.9﹣2.1
②×2.5××4
③÷(﹣)×
④83×0.75+17÷