小二甲班鄭奕杰 1. 36-8 = 28+10-8 = = 27+1 = 28 2. 75-6 =69+10-6 =68+1 = 69 3. 93-9 = 89+10-9 = = 83+1 = 84 4. 52-5 = 48+10-5 = 46+1 = 47 5. 41-2 = 39+10-9 = 38+1 = 39 6. 43-4 = 38+10-4 = = 38+1 = 39 7. 82-8 = 78+10-8 = 73+1 = 74 8. 76-8 = 68+10-8 = 67+1 = 68 9. 82-6 = = 78+10-6 = = 75+1 = 76 10. 34-6 = 28+10-6 = = 27+1 = 28 11. 54-9 = 44+10-9 = 44+1 = 45 12. 41-3 = 38+10-3 = 37+1 = 38 13. 13-6 = 13+10-6 = = 6+1 = 7 14. 92-4 = 88+10-4 = 87+1 = 88 15. 93-5 = 88+10-5 = 87+1 = 88 16. 82-8 = 78+10-8 = = 73+1 = 74 17. 71-8 = 68+10-8 = 62+1 = 63 18. 34-7 = = 24+10-7 = 26+1 = 27 19. 97-9 = 88+10-9 = == 87+1 = 88 20. 91-9 = 88+10-9 = 81+1 = 82 21. 52-5 = 48+10-5 = 46+1 = 47 22. 83-9 = 73+10-9 = = 73+1 = = 74 23. 87-9 = 78+10-9 = = 77+1 = 78 24. 73-5 = 68+10-5 = = 67+1 = 68 |
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