①97×
② ×58+ ×43-
③
④17.34-(7.34-2.6)
⑤
⑥(5.7×40%+6.3× )÷3
① ×[0.75﹣( ﹣25%)]÷1.25
②6.37×1.25﹣1 +4.63×125%
③7.09× +0.225×6﹣60%×0.64
④ ×3+ ×25+ ×
⑥
① -( - )-
②875-375÷25
③12.5×32×0.25
④48×75%+53× -0.75