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第一关：看图列算式

7. 5. 12. 8. 7. 15. 7. 5. 7. 12. 8. 15. 12. 7. 5. 15. 8. 7. 12. 5. 7. 15. 7. 8. 第一关：看图列算式. 第二关：算减想加. 3+8= 4+9= 5+7= 11—3= 13—4= 12—5= 11—8= 13―9= 12—7=. 11. 13. 12. 8. 9. 7. 5. 3. 4. 第三关：算减夺红旗. 争当神算手.

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第一关：看图列算式

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  1. 7 5 12 8 7 15 7 5 7 12 8 15 12 7 5 15 8 7 12 5 7 15 7 8 第一关：看图列算式

  2. 第二关：算减想加 3+8= 4+9= 5+7= 11—3= 13—4= 12—5= 11—8= 13―9= 12—7= 11 13 12 8 9 7 5 3 4

  3. 第三关：算减夺红旗

  4. 争当神算手 9＋8= 12－6= 14－8= 11－6= 8＋7= 13－6= 16－9= 15－6= 7＋9= 15－7= 14－5= 6＋6= 3＋8= 7＋7= 13－7= 12－5= 14－6= 12－9= 17 6 6 5 15 7 9 7 16 9 8 12 6 11 14 7 8 3

  5. 看谁最厉害 17－8－3= 9＋4－6= 11－6＋7= 5＋9－8= 5＋4＋6= 8＋7－9= 6 7 6 12 15 6

  6. 过关啦！

  7. 这节课你有什么收获？

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