1 / 11

1．口算练习

3 8. 2 5. +. 1．口算练习. 120. 330. 50＋70＝ 30＋600＝ 30＋300＝ 90＋20＝ 40＋50＝ 0＋500＝. 630. 110. 500. 90. 2．求38加25的和. 笔算两位数加法：. ①相同数位对齐；. ②从个位加起；. 6. 3. ③个位满十，向十位进1．. 求1738加上625的和. 1738 ＋ 625 =. 求下面两个数的和. 43+32=. 4 3. 4 3. 3 2. +. 7. 5. 3 2.

lila-bright
Download Presentation

1．口算练习

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. 3 8 2 5 + 1．口算练习 120 330 50＋70＝ 30＋600＝ 30＋300＝ 90＋20＝ 40＋50＝ 0＋500＝ 630 110 500 90 2．求38加25的和 笔算两位数加法： ①相同数位对齐； ②从个位加起； 6 3 ③个位满十，向十位进1．

  2. 求1738加上625的和 1738 ＋ 625 =

  3. 求下面两个数的和 43+32= 4 3 4 3 3 2 + 7 5 3 2

  4. 例1 求下面两个数的和 2 4 3 2 4 3 1 3 2 + 7 5 1 3 2

  5. 例2 270 ＋ 58 = 2 7 0 + 5 8 8

  6. 例2 270 ＋ 58 = 2 7 0 + 5 8 1 3 2 8

  7. 例3 求809与3764的和． 809 + 3764 = 4573 8 0 9 + 3 7 6 4 1 1 4 5 7 3

  8. 巩固反馈 1．直接在竖式上计算 2．列竖式计算 238＋326= 1629＋527= 715＋8605=

  9. 巩固反馈 3．判断正误并改正．

  10. 1738 ＋ 625 =

More Related