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I. . . 1. , .




1. , .

2. ?

3. .

6 .

4. .

, . , 3 . , 2 .

, 1 .

, 3 .

, 3 .

, 3 .

II. ( , ).

1. . . , .

: 5 + 4 = 9 14 + 6 5 = 15 9 + 6 = 15

12 + 4 = 16 3 + 8 = 11 9 + 8 = 17

16 + 3 = 19 8 + 5 = 13 9 + 9 = 18

13 2 = 11 4 + 4 + 4 = 12

2. . 1, 5 10. .

5; 1; 10.

3 + 8 = 12 + 6 9 =

14 5 = 4 + 9 6 =

3. , . . . .

4. ?

+ + = . : 5 + 5 + 5 = 15.

+ + = . : 56 + 5 + 5 = 66.

5. . . .

) 4 + 7 = 11 ) 5 + 8 = 13 ) 8 + 9 = 17

11 4 = 7 13 5 = 8 17 8 = 9

11 7 = 4 13 8 = 5 17 9 = 8

6 + 5 = 11 6 + 7 = 13 9 + 5 = 14

11 6 = 5 13 6 = 7 14 9 = 5

11 5 = 6 13 7 = 6 14 5 = 9

6. . 11 .

11 = 10 + 1 11 = 6 + 5 11 = 2 + 9

11 = 9 + 2 11 = 5 + 6 11 = 1 + 10

11 = 8 + 3 11 = 4 + 7

11 = 7 + 4 11 = 3 + 8

. . 12, 13, 14.

7. .

, . , 5, 17. (7 + 8 + 3 = 18.)

III. .

1. .

2. 4 : 6, 8, 9, 7, 10. 3 : 10, 13, 11, 12, 9.

3. >, <, =:

11 3... 12 4 8 + 5 7 + 6

13 2... 15 6 9 + 7 8 + 8

4. 5 , 6 , , . ?

 

35
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