小二甲班鄭奕杰 1. 52-4 = 48+10-4 = 47+1 = 48 2. 35-6 = 29+10-6 = 28+1 = 29 3. 22-6 = = 16+10-6 = 15+1 = 16 4. 35-9 = 26+10-9 = 25+1 = 26 5. 42-8 = 34+10-8 = 33+1 = 34 6. 26-7 = 19+10-7 = 18+1 = 19 7. 85-9 = 76+10-9 = 75+1 = 76 8. 82-5 = 77+10-5 = 76+1 = 77) 9. 43-4 = = 39+10-4 = 38+1 = 39 10. 23-9 = 14+10-9 = 13+1 = 14 11. 24-6 = 18+10-6 = 17+1 = 18 12. 23-6 = 17+10-6 = 16+1 = 17 13. 83-6 = 77+10-6 = 76+1 = 77 14. 22-4 = 18+10-4 = 17+1 = 18 15. 76-9 = 67+10-9 = = 66+1 = 67 16. 65-6 = 59+10-6 = 58+1 = = 59 17. 23-7 = = 16+10-7 = 15+1 = 16 18. 65-8 = 57+10-8 = 56+1 = 57 19. 73-8 = 65+10-8 = = 64+1 = 65 20. 36-8 = 28+10-8 = 27+1 = 28 21. 63-7 = = 56+10-7 = 55+1 = 56 22. 86-7 = 79+10-7 = 78+1 = 79 23. 72-4 = 68+10-4 = 67+1 = 68 24. 72-5 = 67+10-5 = 66+1 = 67 |
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