• 1. 竖式计算

  ①47+36=

  ②72-46=

  ③38+41=

  ④80-52=

  ⑤57+43=

  ⑥57-39-16

  ⑦37+38+13=

  ⑧45+27-38=

  ⑨53-27+29=