أجد ناتج الطرح ثم أتحقق مستعملا الجمع: 8. 57 27 - 30 + 30 _________ _________ 27 57
9. 60 50 - 10 + 10 _________ _________ 50 60
10. 42 37 - 5 + 5 _________ _________ 37 42
11. 75 34 - 41 + 41 _________ _________ 34 75
12. 41 15 - 26 + 26 _________ _________ 15 41
13. 74 46 - 28 + 28 _________ _________ 46 74
14. 56 28 - 28 + 28 _________ _________ 28 56
15. 56 45 - 11 + 11 _________ _________ 45 56
16. 47 16 - 31 + 31 _________ _________ 16 47
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