① - +
② + -
③ - + -
④5-( + )
⑤ - +
⑥ +( - )
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+ ×
⑤
⑥
0.25×8= 50%×0.4= 7÷7%= 23=
①﹣(+)
②8.89﹣1.84﹣3.16
③÷9+×
④12.5×0.32×2.5