①(25.8+7.5)+2.5
②85.7﹣(15.3﹣4.8)
③158×[(27+54)÷9]
④88×125
⑤12×97+3
⑥273﹣64﹣36
①10.9﹣150÷50×3
②520+[13×(24.5﹣20.5)]
③★3.9+4.08+5.92+1.1
④★99×17
⑤★810÷18
①2.4÷×
②(+﹣)×36
③×99
④29.3﹣12.6﹣7.4
⑤5.9×8.5﹣49×0.85
⑥×[6÷(﹣)]
①1.25×3.2×2.5
②×[0.75﹣()]
③×()
④2022×
⑤55×102+646÷38