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II. .
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1. . ? (.)
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: ) 35 ) 43 ) 75 ) 64
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67 69 41 10
2. ? ? .
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:
1) 4 + 3 = 7 () 2- ;
2) 7 + 5 = 12 () 3- ;
3) 4 + 7 + 12 = 23 () 3 .
3. .
4. . . ( = + .)
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) 67 :
16 67
? 16
83 ()
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) 98 :
76 98
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22 ()
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6 ( ).
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1- 2-
7. 6 , 10? . (6 + 1 = 7; 6 + 2 = 8; 6 + 3 = 9.)
. .
5 + = + 8 = + = 2 2 + =
5 + 1 = 6 1 + 8 = 9 1 + 1 = 2 2 + 0 = 2
5 + 2 = 7 0 + 8 = 9 2 + 0 = 2 2 + 1 = 3
5 + 3 = 8 2 + 2 = 4
5 + 4 = 9 2 + 3 = 5
5 + 0 = 5 2 + 6 = 8
5 + 0 = 5 2 + 7 = 9
. .
37 + 2 = 5 54 + 1 = 6 8 + 18 =
37 + 21 = 58 54 + 10 = 64 80 + 18 = 98
37 + 20 = 57 54 + 11 = 65 81 + 18 = 99
37 + 22 = 59 54 + 12 = 66
54 + 13 = 67
54 + 14 = 68
54 + 15 = 69
III. .
.
1. .
82 20 = 73 23 = 90 20 =
82 22 = 65 60 = 14 + 25 =
64 + 30 = 58 58 = 86 34 =
64 + 33 = 49 + 40= 70 + 16 =
2. :
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) 40, 8, 48; ) 25, 12, 37.
IV. .
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49
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