0.32×4.5+5.5×0.32 15.7×40×2.5
9.26+1.2÷(3-2.6) 7÷11+×4
①(++)÷
②35.21×73-3521×0.29+352×5
①3.86+6.4+2.14+7.6
②5.2÷0.32﹣0.12
③()×15
④
⑤
⑥