II. .
1. , :
+ + 7 = 17 | 15 = 6 |
+ + 6 = 16 | 18 = 9 |
+ + = 17 | 15 = 7 |
2. , , , . , : .
3. . , .
III. .
, <, >.
9 > 8 7 < 8 5 > 4 3 < 8
.
.
IV. .
1. 1.
: 14 10? ?
, ?
14 10.
.
? ( ?, .)
2. 2.
, 0? ( .)
.
7 7 = 0 97 97 = 0
25 25 = 0 56 56 = 0
3. 3.
.
, .
7 2 = 5 | 12 10 = 2 | 11 10 = 1 | 8 1 = 7 | 7 3 = 4 | 8 2 = 6 |
9 4 = 5 | 8 6 = 2 | 6 5 = 1 5 4 = 1 | 10 3 = 7 | 9 5 = 4 |
4. 4.
28, 26, 18, 12, 10, 6, 2 , 12?
.
18 6 = 12
5. 5.
.
? ?
, .
:
10 8 = 2 (.) .
: 2 .
6. 7.
10 , 10 , .
90 80 = 10 80 70 = 10 70 60 = 10 60 50 = 10 40 30 = 10 30 20 = 10 20 10 = 10 | 95 85 = 10 85 75 = 10 75 65 = 10 65 55 = 10 55 45 = 10 45 35 = 10 35 25 = 10 25 15 = 10 | 11 1 = 10 12 2 = 10 13 3 = 10 14 4 = 10 15 5 = 10 16 6 = 10 17 7 = 10 18 8 = 10 19 9 = 10 |
7. .
, , 15.
9 + 1 + 5 = 15 6 + 5 + 4 = 15
6 + 6 + 3 = 15 4 + 4 + 4 + 3 = 15 . .
7 + 8 = 15
V. .
?
?
: , . 68, 7.
|
|
34
: ; ; .
I. .
II. .
1. .
. ?
.
?
?
2. .
.
. 8 , 7. . ? | . 8 . 7. . , 20 ? |
, , ?
3. -.
. 1 ?
+ | + | |||||||
4. :
) 15, 22, 29, , , ;
) 23, 40, 57, , , ;
) 4, 6, 12, , , ;
) 11, 22, 44, , , ;
) 1, 2, 4, , , ;
) 7, 9, 11, , , .