280+326=?,146+445=?,374+746=?
668-60=?,998-526=?,918-219=?
23+?=605,568+?=738,274+?=977
47*3=?,81*6=?,125*8=?
108/9=?,900/2=?,628/4=?
---
?-221=892-420,161+160+462+132=?
704-252=?+355,505+337+292-915=?
220+?+304=966,423+243-185-356=?
229+?-460=398,999-336-182-321=?
找到旧绘本