• 1. (2018五上·汽开区期中) 脱式计算．

  ①8.9×5.2+9.3

  ②1.4×[（7.5+38.4）÷0.9]

  ③9.4×8.4+5.8

  ④1.3×2.2﹣0.2

  ⑤0.9+8.3×8.3

  ⑥30.1÷[（6.07+2.53）×0.7]