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I. . . 1. .




1. .

                     
                 
                 

:

                     
                 
                 

2. 8 , 5. ?

3. . , ? ( , .)

4. ?

II. ( ).

1.

) 8 + 2 = 10 ) 7 + 7 = 14 ) 6 + 3 = 9 ) 5 + 6 = 11

8 + 4 = 12 7 + 5 = 12 6 + 5 = 11 5 + 4 = 9

8 + 6 = 14 7 + 2 = 9 6 + 7 = 13 5 + 8 = 13

8 + 8 = 16 7 + 4 = 11 6 + 4 = 10 5 + 15 = 20

8 + 9 = 17 7 + 9 = 16 6 + 9 = 15 5 + 7 = 12

8 + 7 = 15 7 + 3 = 10 6 + 6 = 12 5 + 9 = 14

8 + 5 = 13 7 + 8 = 15 6 + 8 = 14 5 + 5 = 10

8 + 3 = 11 7 + 6 = 13 6 + 2 = 8 5 + 3 = 8

2.

) 16 + 5 = 21 ) 13 + 3 = 16 ) 12 + 6 = 18 ) 15 + 9 = 24

16 + 7 = 23 13 + 5 = 18 12 + 10 = 22 15 + 5 = 20

16 + 10 = 26 13 + 9 = 22 12 + 9 = 21 15 + 7 = 22

16 + 9 = 25 13 + 4 = 17 12 + 3 = 15 15 + 10 = 25

16 + 8 = 24 13 + 8 = 21 12 + 7 = 19 15 + 2 = 17

16 + 12 = 28 13 + 6 = 19 12 + 5 = 17 15 + 8 = 23

16 + 6 = 22 13 + 7 = 20 12 + 11 = 23 15 + 6 = 21

16 + 11 = 27 13 + 10 = 23 12 + 8 = 20 15 + 3 = 18

3.

. , ?

) 16 . :

6 . 16 = 8 + 8

? . 8 6 = 2 (.)

) 20 . :

7 . 20 = 10 + 10

? . 10 7 = 3 (.)

) 18 . :

5 . 18 = 9 + 9

? . 9 5 = 4 (.)

) 24 . :

8 . 24 = 12 + 12

? . 12 8 = 4 (.)

4.

. 20. .

) 20 5 7 = 8 ) 20 4 3 6 = 7

) 20 8 2 3 = 7 ) 20 2 4 3 5 = 6

5.

.

) *7 + *6 = *? ) *5 + *9 =*?

: *7 + *6 = *3 : *5 + *9 = *4

) *7 *8 = *? ) *5 : *5

: *7 *8 = *9 *8 *8

*9*9

*? *2

6.

? > <.

: ) 5 + 8 < 8 + 6; ) 6 + 8 5 > 7 + 7 6;

) 15 7 > 15 9; ) 13 + 9 > 19 + 2.

 

 

36

: , , , ; .

.

: , , , .

: ; , .

( / ): : ; : , , ; , ; , ; : , , .

I. . .

1. .

8 + 7 9 = 3 + 8 2 =

6 + 9 7 = 9 + 5 6 =

4 + 8 5 = 14 7 + 5 =

15 7 + 6 = 12 5 + 8 =

13 4 + 5 = 16 8 + 3 =

2. .

3. 10 . 2 ? .

II. .

. ?

.





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