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
①76.15−9.7+11.3
②78×4×2×125
③25×404
④[(1200-900)÷50×2]×24
⑤4.9×69+4.9×32−4.9
⑥32000÷125
①2.4×1.3+3.9
②3.8-0.34-0.66
③0.89×4.6+0.89×5.4
④1.25×32×2.5