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) 60, 55, 50, , ,
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57 4 = 17; 24 9 = 16; 34 + 13 = 47; 53 + 9 = 63
3. 45 5, . .
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4. , :
35 , 4 . ?
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5. .
25 , 5 . ?
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6. :
) 87 ; ) 8 2 ; ) 1
7-12 .
7. 4 . 76, 77, 78, 79. .
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5 , 7 , 8 . ?
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9. .
1 4 , 16 . , ?
10. : 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15. 1. ?
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11. .
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12. 
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7, 17, 27, , , .
2. . .
89 6 = 29; 27 9 = 16; 25 + 13 = 38; 47 + 8 = 58
3. 65 5, . .
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4. , :
- 18 , 2 . ?
) 18 2; ) 18 + 2.
5. .
40 , 6 . ?
6. :
) 45 ; ) 4 7 ; ) 1
7-12 .
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7. 4 . 36, 37, 38, 39. .
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9. .
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10. 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17. , 3 5, . .
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11. .
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12. :
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2
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2
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(7 - 12 )
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