1 / 8

學習範疇： 數 ( N)

學習範疇： 數 ( N). 學習單位： 3N2 加與減（四）. 學習重點 : 四位數的加減混合計算. 學習課文 : 三上 A 冊 第 7 課. 四位數的加減混合計算. 5 2 1 0. 1 9 6 7. +. 1. 4 8 3 1. –. 1. 5210 + 1967 – 4831 = ？. 5210 + 1967 – 4831. = 7177 – 4831. 7 1 7 7. = 2346. 2 3 4 6. 7 8 6 2. 2 5 6 3. –. 2. 1 4 9. +. 2.

gareth-hayden
Download Presentation

學習範疇： 數 ( N)

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. 學習範疇： 數 (N) 學習單位： 3N2 加與減（四） 學習重點 : 四位數的加減混合計算 學習課文 : 三上 A 冊第 7 課

  2. 四位數的加減混合計算

  3. 5 2 1 0 1 9 6 7 + 1 4 8 3 1 – 1 5210 + 1967 – 4831 =？ 5210 + 1967 – 4831 = 7177 – 4831 7 1 7 7 = 2346 2 3 4 6

  4. 7 8 6 2 2 5 6 3 – 2 1 4 9 + 2 7862 – 2563 + 149 =？ 7862 – 2563 + 149 = 5299 + 149 5 2 9 9 = 5448 5 4 4 8

  5. 5 3 5 0 3 9 9 9 – 3 2 6 0 1 + 3 電視機售 5350元，錄音機比電視機便宜 3999元，影碟機又比錄音機貴2601 元， 影碟機售多少元？ 5350 – 3999 + 2601 = 1351 + 2601 1 3 5 1 = 3952 3 9 5 2 影碟機售 3952 元。

  6. 1 8 6 9 9 9 9 – 4 5 2 0 3 + 4 哥哥原有 1869元，昨天用去 999元，今天 媽媽再給他5203 元，哥哥現有多少元？ 1869 – 999 + 5203 = 870 + 5203 8 7 0 = 6073 6 0 7 3 哥哥現有6073 元。

  7. 2 3 2 0 8 0 0 – 5 2 3 2 0 + 5 國華有 2320元，明德比國華少 800元，兩人合共有多少元？ 2320 – 800 + 2320 = 1520 + 2320 1 5 2 0 = 3840 3 8 4 0 兩人合共有3840 元。

  8. 再見！

More Related