1 / 12

加减法的简便计算 ( 总复习 )

加减法的简便计算 ( 总复习 ). 用简便计算。 156+87=. 156+90-3. =246-3 =243. 275+102 =. 275+100+2. =375+2 =377. 389+503=.  =400+503-11=903-11 =892.  =389+500+3=889+3=892.  =400+500-11+3=900-11+3=892. 99+136 175+197 299+435 54+97 731+203. 456-198 =. 456-200+2.

keiko-justice
Download Presentation

加减法的简便计算 ( 总复习 )

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 加减法的简便计算(总复习)

  2. 用简便计算。 156+87= 156+90-3 =246-3 =243

  3. 275+102= 275+100+2 =375+2 =377

  4. 389+503= =400+503-11=903-11 =892 =389+500+3=889+3=892 =400+500-11+3=900-11+3=892

  5. 99+136 175+197 299+435 54+97 731+203

  6. 456-198 = 456-200+2 =256+2 =258

  7. 641-403 = 641-400-3 =241-3 =238

  8. 148-79 250-199 526-298 631-405

  9. 1、填空267+299=267+300○1354+401=354+400○1699-197=699-200○33276-2001=3276-2000○11、填空267+299=267+300○1354+401=354+400○1699-197=699-200○33276-2001=3276-2000○1

  10. 2、用简便方法计算298+437 396+199 5631-2002 821-1998720-2999 882-203

More Related