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學習範疇：數 學習單位： 3N2 加與減 ( 四 )

5 加減混合計算. 學習範疇：數 學習單位： 3N2 加與減 ( 四 ). 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. 7862 – 2563 + 149 = ？. 7862 – 2563 + 149.

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學習範疇：數 學習單位： 3N2 加與減 ( 四 )

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  1. 5 加減混合計算 學習範疇：數 學習單位：3N2 加與減 (四)

  2. 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

  3. 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

  4. 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？ 影碟機售： 5350 – 3999 + 2601 1 3 5 1 = 1351 + 2601 = 3952 (元) 3 9 5 2

  5. 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？ 哥哥現有： 1869 – 999 + 5203 8 7 0 = 870 + 5203 = 6073 (元) 6 0 7 3

  6. 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？ 兩人合共有： 2320 – 800 + 2320 1 5 2 0 = 1520 + 2320 = 3840 (元) 3 8 4 0

  7. 再見！

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