.


:




:

































 

 

 

 


. !!! .

.

: 1 + 2 =
- , .
+ 59 = 84 37 + = 82
= 84 59 = 82 - 37
= 25 = 45
25 + 59 = 84 37 + 45 = 82
84 = 84 82 = 82
: = 25 : = 45

: = .
- , .
g 43 = 29
g = 43 + 29
g = 72
72 43 = 29
29 = 29
: g = 72
- , .
92 d = 58
d = 92 58
d = 34
92 34 = 58
58 = 58
: d = 34


: 1 2 = .
- , .
k 8 = 72 9 r = 54
k = 72: 8 r = 54: 9
k = 9r = 6
9 8 = 72 9 6 = 54
72 = 72 54 = 54
: k = 9 : r = 6

: : = .
- , .
b: 7 = 5
b = 7 5
b = 35
35: 7 = 5
5 = 5
: b = 35
- , .
63: p = 9
p = 63: 9
p = 7
63: 7 = 9
9 = 9
: p = 7

14 = 67 s + 26 = 90
29 = 58 + 45 = 84
86 d = 54 62 + b = 98
60 f = 37 74 + = 96

7 = 35 y: 7 = 9
8 g = 56 : 8 = 6
f 4 = 58 48: = 9
b 7 = 21 56: = 8

86 = 18 + 29 18 86
86 = 47 2947
= 86 47 47 39
= 39
86 39 = 18 + 29 86 18
47 = 47 39 29
: = 39 47 47

93 - = 54 17 92 = 63 + 18
60 + = 93 18 81 = 35 + 28
14 = 24 + 18 19 = 70 54
36 = 25 + 17 63 + = 91 18
4 = 3 8 42: = 56: 8
+ 18 = 12 6 56 = 49: 7
35: = 42: 6 32: =64: 4
8 = 20 2 : 3 = 12 2
71 = 4 9 6 = 45 9
78 = 40: 10 : = 63: 7

- (80 - 59) = 75 80 75
21 = 75 59 21
= 75 + 21 21 96
= 96
96 (80 - 59) = 75 80 96
75 = 75 59 21
: = 96 21 75

(66 35) = 28 (88 - 19) = 34
(57 - 44) + = 89 (49 +13) + = 99
+ (25 + 33) = 71 + (13 + 28) = 21
(74 + 18) = 37 (25 + 19) = 36
(90 - 68) = 65 + (91 - 49) = 87


80 (7 + ) = 53 80 20
7 + = 80 53 53 7
7 + = 27 27 13
= 27 7
= 20
80 (7 + 20) = 53 20 80
53 = 53 7 27
: = 20 27 53


40 - ( + 16) = 10 (19 ) + 18 = 30
( 14) + 23 = 80 (: 6) + 49 = 57
(67 + ) 14 = 80 (31 + ) 18 = 23
( + 6): 4 = 20 ( 8) 4 = 64
36: (22 - ) = 4 (34 ) 16 = 52
( + 8) 3 = 75 ( - 30) + 26 = 75
(7 ) + 50 = 99 (12 ) + 51 = 99
36 + ( 6) = 72 ( - 12) 11 = 77
(19 - ) + 18 = 30 96: (80: ) = 6
(: 6) + 49 = 57 ( 12): 4 = 18
80: ( + 17) = 2 (25 + ): 6 = 12

(75 - ) + 224 = 280 (365 - 253) = 627
473 (92 - ) = 358 (345 + 422) = 216
4 ( + 46) = 800 ( - 138) 259 = 164
( - 112) 3 = 300 899 ( 219) = 176


.

65 49 + 48 = 64 = 64
65 = 65 65 16
49 = 49 49 48
64 = 64 16 64


8 59 + 36 =
77 29 + 19 =
93 2 17 =
36 28 + 14 9 =
58 + 9 36 =
90 47 + 28 =
36 27 + 46 =
24 + 49 39 + 6 =
13 7 16 + 29 =
71 -59 + 44 =
19 + 36 + 28 =
89 53 + 37 =
6 29 + 38 =


3. .

(67 - 27) + (42 + 11) = 71 18: 2 = (89 27 - 43) 14: 2 =
21 + (89 - 63) 63 = 35 + 2 7 = 54 + (68 - 29) 36 =
(36 + 58) (19 + 47) = 5 2 + 48 = 15 + (71 - 46) + 28 =
(90 - 65) + 26 28 = 20: 2 + 59 = 61 23 + (55 - 36) 39 =
(26 + 43) 17 (6 + 8) = 35 8: 2 = 90 39 (40 28) + 45 =
49 (15 + 13) + (67 - 35) = 6 2 + 19 = (99 26 + 13) (41 - 26) =
72 36 + 48 = 81 14: 2 = (91 45 + 19) (63 - 39) =
90 62 + 37 = 25 + 20: 2 = 63 + 29 69 + 20: 2 =
81 27 + 39 = 5 (92 - 83) = 26 + 36 17 18: 9 =
53 + 27 69 = 16: (80 - 78) = 84 45: 45 17 1 29 =
(36 + 62) 79 + 67 = (38 - 29) 2 = 57 + (90 - 54) + 85: 85 =
(87 69 + 56) + 17 = (36 - 20): 2 = 25: 25 1 5 =
32 + 32 47 + 77 69 = 91 16: 2 = 14: 2: 7 15 =
27 + 33 24 + 59 72 = 45 + 2 9 = 1 16: 8 9 =
84 + 16 49 + 39 86 = 39 20: 2 = 30: 30 18: 2 =
73 + 27 72 + 42 54 = (64 29 - 19): 2 = 44: 44: 1 36 =
99 87 + 52 + 25 42 + 12 = (34 + 16 - 32): 2 = 18: 18 12: 2 =
69 + 14 + 17 48 25 + 15 = (64 + 13) 59 + 25 = 2 5: 10 99 =
(24 + 67) 45 + (84 - 59) = (39 + 47) 51 + 29 = 20: 10 8: 16 =
(97 - 18) (36 + 27) + 68 = (93 56 + 14) 20: 2 = 12: 6 + 9: 3 + 48 =
47 + 26 34 + 45 56 + 48 = (12: 2 + 24: 3): 7 = (16: 2) 4 =
66 + 26 54 + 23 14 + 53 = (14: 2 15: 3) 10 = 8 (21: 7) =
(36 + 47) (25 + 18) 29 = (21: + 18: 9) 10 = 4 (15: 3) =
94 (85 - 57) + (74 - 48) = (68 - 43) + 57 (34 + 17) = 3 (40: 4) =
96 (38 + 49) + (82 - 66) + 69 = (75 + 19 - 26) (18: 2 + 26) = 2 10 + 80 =
(85 - 59) + 64 (50 - 28) = 18: 6: 3 5 3: 15 10: 2 = 63 36: 4 =
(36 + 58) (19 + 47) + (80 - 66) = 40: 10 3: 6 8: 16 27: 3 = 81 58 + 4 8 =
(35 + 57) (26 + 48) + (90 65) = 90 (60 - 42) + (50 - 36) = 47 28 + 5 3 =
92 (44 - 16) (65 - 48) + 24 = (75 - 58) + (37 + 25) 49 = 94 59 + 72: 72 =
50 36: 36 + 4 10 = 80 (70 - 35) + (60 - 28) 54 = 18: 3 5 =
67 + 14 1: 14 46 = 46 + 45 - (32 - 15) (80 - 63) = 14: 2 5 =
(3 7 + 57 29 - 35): 7 = (69 + 18) (92 - 39) + 66 = 36: 6 4 =
74 (34 + 29 + 7): 10 4 = (27 + 36) (74 - 58) 16 = 28: 4 6 =
(54 - 39) + (47 - 28) (16 + 9) = 90 (36 + 47) + (85 - 59) = 45: 9 6 =
40: 5 4 27: 3 2 = 80 + (65 37 - 9) (48 + 23) = 2 9: 6 =
90 (50 - 38) (25 + 13) 26 = 7 6 3 5 = 54: 6 + 42: 7 =
80 - 7 7 = 14: 2 + 8 7 = 90 40: 5 16 =
7 8 28 = 36: 4 + 6 7 = 45 + 28: 4 39 =
66 7 9 = 21: + 35: 5 = 75 + 49: 7 24 =
56 7 5 = 32: 4 5 = 50: 5 6 =


100 9 2: 6 + 9: 9 = 8 8 + 27 = 60 72: 8 4 = 48: 8 9 =
100 (40: 5 3 + 16) = 64: 8 9 = 50 7 8: 56 = 40: 10 8 =
82 (90 69) + (78 59 + 12) = 6 8 39 = 51 + 9 28 = 72: 8 + 20: 4 =
91 27 36 + (29 + 64 72) = 90 36: 6 8 = 16: 4 + 14: 7 = 63: 9 + 81: 9 =
82 (90 - 69) + (78 59 + 12) = 63: 9 8 = 63: 9 4 = 4 7 + 36: 9 =
91 27 36 + (29 + 64 - 72) = 63: 7 9 = 27 + 21: 7 = 8 9 + 56: 8 =
(65 - 38) + (75 - 21) 65 = 48: 6 9 = 17 9 + 28 = 42: (52 - 46) =
86 79 + 64 (18 + 35) = 32: 4 9 = 15: 5 + 18: 6 = 72 81: 9 =
(84 13 + 37) (53 21 - 7) = 81: 9 4 = 12: 6 9 = 36 + 24: 3 =
(60 13 - 7) + (25 + 15 - 9) = 36 + 54: 6 = 39 + 81: 9 = 56 32: 8 =
27: (25 - 16) + 64: (43 23 - 12) = (54 - 46) 2 = 4 3: 6 = 42 + 72: 9 =
(35 + 17 + 42) (69 13 - 28) = (71 - 65) 3 = 41 15: 3 = 72: 72 36 =
(41 - 27) + (81 - 58) 54 = (15 + 6): 3 = 6 4 9 = 42: 7 1 =
23 + 67 (81 - 58) 36 = (25 + 7): 4 = 8 4: 32 = 40: 5: 8 =
90 (57 - 29) + (81 - 68) - 42 = 56: 8 + 7 7 = 9 8 + 35: 5 = 56: 7 9 =
(56: 8 + 81: 9 + 4) 4: 10 = 56: 7 (60 - 59) = 6 8 + 2 7 = 5 8: 20 =
24: 8 + 40: 2 + 60: 30 = 46 + 37 9 5 = 68 29 + 37 = 49: 7 40 =
(72 - 67) (2 + 8) = 10 5 (93 49) = 85 69 + 47 = 5 8 6 =
34 2 56: 8 + 27 3: 9 = (42 + 18): 5: 2 = (78 - 58): 2 3 = 56: 14 17 =
100 (56 + 19 - 34) + 81: 9 4 = 67 + 6 (60 - 47)= 81: 3 2: 3 = 6 4 5 =

 

 


.


17 8 = (10 + 7) 8 = 80 + 56 = 136

43 8 = 68 2 = 54 6 = 72 5 = 44 2 = 35 7 = 83 5 =
48 9 = 45 4 = 67 7 = 63 7 = 62 4 = 59 6 = 65 7 =
29 7 = 64 5 = 29 9 = 29 8 = 53 4 = 28 7 = 83 4 =
45 8 = 94 8 = 47 8 = 64 7 = 52 7 = 46 6 = 94 4 =
73 9 = 37 8 = 36 9 = 73 4 = 38 6 = 28 4 = 83 8 =

5. .

42: 3 = (30 + 12):3 = 10 + 4 = 14

56: 4 = 38: 2 = 81: 3 = 90: 6 = 90: 5 = 48: 4 = 46: 2 =
95: 5 = 96: 6 = 90: 2 = 63: 3 = 84: 4 = 78: 6 = 64: 4 =
68: 4 = 96: 4 = 60: 4 = 84: 6 = 72: 2 = 57: 3 = 76: 4 =
84: 7 = 75: 3 = 70: 5 = 42: 3 = 50: 2 = 72: 6 = 72: 4 =
91: 7 = 87: 3 = 72: 3 = 75: 5 = 99: 3 = 95: 5 = 45: 3 =

6. .

80: 16 = 5 ( 80 16? 16 , 80. .
16 2 = 36 .
16 3 = 48 .
16 4 = 64 .
16 5 = 80 . , 80: 16 = 5).
( . 1 6 6, 6. 6, 0. 5. : 16 5 = 80.)

45: 15 = 56: 14 = 54: 18 = 91: 13 = 88: 44 = 70: 14 = 75: 15 =
81: 27 = 48: 24 = 78: 13 = 90: 18 = 78: 26 = 72: 24 = 69: 23 =
78: 39 = 65: 13 = 48: 16 = 92: 23 = 96: 24 = 36: 12 = 75: 18 =
96: 16 = 90: 15 = 60: 15 = 87: 29 = 57: 19 = 85: 17 = 96: 32 =

 

 

7. .

30 2 = 60

20 8 = 30 8 = 90 5 = 40 8 = 70 4 = 50 3 = 60 8 =
30 8 = 60 6 = 50 8 = 20 9 = 90 3 = 40 5 = 20 3 =
70 6 = 50 4 = 40 7 = 30 7 = 80 4 = 80 8 = 30 9 =
50 8 = 70 9 = 30 9 = 90 8 = 40 4 = 50 6 = 40 9 =

80: 2 = 40

120: 6 = 810: 9 = 270 3 = 240: 4 = 540: 6 = 200: 4 = 160: 4 =
140: 2 = 720: 8 = 540: 6 = 320: 8 = 360: 6 = 640: 8 = 350: 7 =
240: 4 = 450: 5 = 360: 6 = 420: 6 = 400: 5 = 270: 3 = 480: 6 =
720: 8 = 360: 4 = 640: 8 = 280: 7 = 350: 5 = 280: 4 = 490: 7 =

8. .

60: 20 = 3 600: 20 = 30 600: 200 = 3

100: 20 = 490: 70 = 810: 90 = 350: 70 = 320: 80 = 480: 80 = 120: 60 =
80: 20 = 120: 40 = 120: 30= 420: 70 = 450: 90 = 150: 30 = 280: 40 =
90: 30 = 540: 60 = 350: 50 = 560: 80 = 250: 50 = 160: 80 = 720: 80 =
120: 20 = 360: 60 = 420: 60 = 240: 60 = 160: 40 = 160: 40 = 360: 60 =

9. .

30: 4 = 7 (. 2) . 4 7 = 28 + 2 = 30

11: 5 = 15: 2 = 23: 8 = 38: 6 = 53: 7 = 19: 7 = 15: 6 =
14: 3 = 38: 9 = 45: 6 = 75: 9 = 29: 3 = 39: 5 = 24: 7 =
19: 6 = 21: 8 = 19: 2 = 82: 8 = 42: 5 = 10: 3 = 43: 4 =
13: 4 = 22: 8 = 25: 4 = 38: 6 = 34: 4 = 14: 4 = 35: 3 =

10. 0.
!!! .

7 0 = 0

6 0 = 10 0 = 81 0 = 31 0 = 47 0 = 54 0 = 85 0 =
9 0 = 14 0 = 75 0 = 28 0 = 89 0 = 67 0 = 34 0 =
4 0 = 36 0 = 45 0 = 62 0 = 63 0 = 76 0 = 99 0 =
2 0 = 42 0 = 61 0 = 38 0 = 25 0 = 69 0 = 44 0 =

 

. !!! .

0: 5 = 0

!!! .

6: 0

1 0 1 = 0: 32 9 =
32: 4 0 = 0 45: 7 =
40: 8 0 = 100: 1 0 =
91: 91 0 = 50: 10 0 =


32: (8: 1) + (18 7 0): 6 = 60 12 4 + 28 = 66: 22 23 =
4 6 + 8 3 + 47 = 33 + 91: 7 29 = 45: 15 16 =
(53 + 27) 37 + (81 65) 29 = 80 18 4 + 35 = 84: 28 14 =
(78 - 69) (37 29) = 54 + 90: 6 21 = 85: 17 15 =
(84 - 23) (71 - 25) = 48: 3 + 29 13 = 8 12: 3 =
4 6 + 8 3 + 47 = 72: 6 + 47 27 = 29 3: 87 =
7 7 + 17 + (45 - 36) = 96: 32 19 = 56: 8 13 =
37 + (56 - 56) + 9 6 = 88: 11 12 = 68: 4 + 27 3 =
(58 + 19) 28 + (70 - 36) = 91: 7 + 7 12 = 75: 15 18 =
100 - 96: 3 5 12 + 63 = 76: 4 + 96: 32 = 48: 3 4 =
(28 + 14): 7 (42 - 37) = 56: 4 + 17 4 = 92: 23 16 =
4 (83 - 63) + 100: (85 - 65) = 11 9 85: 5 = 87: 29 25 =
91:13 + 78: 6 + 54: 3 = 3 32 90: 2 = 60: (45: 3) =
42: 3 + 68: 4 + 70: 14 = 56: 4 + 81: 27 = 80: 5 3 =
72: 24 + 57: 19 + 80: 16 = 78: 26 + 8 12 = 90: 6 4 =
40 12 + 65: 13 + 72: 6 = (56: 14) 18 = (90: 18) 15 =
(88: 44 18 + 44): - 29 = (91: 13) 3 = 57 + 10 3 48 =
100 55: 11- 85: 17 45: 15 = 27 3: 9 + 19 = 90 14 2 + 17 =
24: 8 + 30: 2 + 51: 17 + 66: 11 = 60: 15 9 28 = (17 + 4) 3 =
90 + 36: 4 - 42: 14 + 76: 19 = 48: 16 + 59 16 = (27 - 9) 5 =
35: 7 +40: 5 57: 19 60: 6 = 29 3 16 45 = (28 3) 4 =
23 4 58: 2 5 12 + 98: 49 = 13 5 + 76: 4 = 39 2 16 4 =
92: 2 + 13 2 94: 47 11 6 = 15 5 12 4 = 27 2 + 45: 3 =
12 5 84: 6 + 2 27 100: 25 = 17 5 12 + 4 16 = (42 + 18): 5 =

 

12. .
1) 27 , 19 .
?
. 27 .
. -? ., 19 . .
27 + 19 = 46 (.)
: 46 .

2) 39 , 15 .
?
- 39 .
? .
-? ., 15 . .

1) 39 + 15 = 54 (.)
2) 39 + 54 = 88 (.)
: 88 .

3) 38 . 16 .
?
- 16 .
38.
-? .
38 16 = 22 (.)
: 22 .

4) 35 . 18 .
?
35 .
- 18 .
-? .
35 18 = 17 (.)
: 17 .

5) . 24 ,
17 .
?
-? .
- 24 .
17 .
24 + 17 = 41 .
: 41 .


6) 64 .
, 28 .
?
64 .
- ?.
- 28 .
64 28 = 36 (.)
: 36 .

7) 37 16 .
, ?
. 37 .
? .
׸ . 16 .
37 16 = 21 ()
: 21 .

8) 58 .
12 29 .
?
58 .
- 12 . 29 .
-? .
1) 12 + 29 = 41 (.)
2) 58 41 = 17(.)
: 41 .

9) . 19 , -8,
37.
?
-? .
- 19 . 8 .
37 .
1) 19 + 8 = 27 (.)
2) 27 + 37 = 64 (.)
: 64 .
10) 68 . ,
15 27 .
?
- 68 .
? .
15. + 27 .
1) 15 + 27 = 42 ()
2) 68 42 = 26 (.)
: 26 .

11) 72 . 9 2 .
?
- 72
9 . 2
-?
1) 2 9 = 18 ()
2) 72 18 = 54 ()
: 54 .

12) 15 2 .
18 .
?
- 15 . 2
- 18
-?
1)2 15 = 30 ()
2) 30 18 = 12 ()
: 12 .

13) . 6
8 , 29 .
?
6 . 8
- 29
-?
1) 8 6 = 48 ()
2) 48 29 = 19 ()
: 19 .

14) 3 4 6 7
.
?

- 3 . 4 .
? .
6 . 7 .
1) 4 3 = 12 (.)
2) 7 6 = 42 (.)
3) 12 + 42 = 54 (.)
: 54 .

15) 5 4 6 7 .
, ?
- 5 . 4 .
? . .
6 . 7 .
1) 4 5 = 20 (.)
2) 7 6 = 42 (.)
3) 42 20 = 22 (.)
: 22 .

16) 6 54 .
4 ?
6 . - 54 .
4 . -? .
1) 54: 6 = 9 (.)
2) 9 4 = 36 (.)
: 4 36 .

17) 7 56 .
72 ?
7 . 56 .
? . 72 .
1) 56: 7 = 8 (.)
2) 72: 8 = 9 (.)
: 72 9 .

18) 46 , 19 , ,
28 , .

?
46 .
-? ., 19 . .,
-? ., 28 . .,
1) 46 19 = 27 (.)
2) 27 + 28 = 55 (.)
: 55 .

19) 55 , 26 , ,
37 , .
, ?
55 .
-? ., 26 . ., ? .
-? ., 37 . .,
1) 55 26 = 29 (.)
2) 29 + 37 = 66 (.)
3) 55 + 29 + 66 = 150 (.)
: 150 .

20) 24 , 16 , ,
17 , .
?
24 .
-? ., 16 . .,
-? ., 17 . .,
1) 24 + 16 = 40 (.)
2) 24 + 40 = 64 (.)
3) 64 17 = 47 (.)
: 47 .

21) 36 , 28,
12 , .
?
- 36 .
- 28 .? .
-? ., 12. .,
1) 36 + 28 = 64 (.)
2) 64 12 = 52 (.)
3) 36 + 28 + 52 = 116 (.)
: 116 .

22) 98 . 25 , 14
, , .
?

-25 .
-? ., 14 . ., 98 .
-? .,
1) 25 + 14 = 39 (.)
2) 25 + 39 = 64 (.)
3) 98 64 = 34 (.)
: 34 .

23) 4 , 6 .
?
- 4 .
-? ., 6 .
4 6 = 24 (.)
: 24 .

 


24) 36 , 6 .
?
- 36 .
-? . 6 .
36: 6 = 6 (.)
: 6 .

25) 42 , 7 .
?

42 .
-? ., 7 .
1) 42: 7 = 6 (.)
2) 42 + 6 = 48 (.)
: 48 .

26) 27 , 3 , ,
12 , .
?
27 .
-? ., 3 ., ?.
-? ., 12 . .,
1) 27: 3 = 9 (.)
2) 9 + 12 = 21 (.)
3) 27 + 9 + 21 = 57 (.)
: 57 .

12. , , .
.

( ).

= 12
b = 5 .
=?

1) = + b + + b = ( + b) 2 =
= (12+5) 2 = 34 ()
: = 34 .

( ).

= 7
b = 6
= 9
=?

= + b + =
= 7 + 6 + 9 = 22 ()
: = 22 .

.

= 9
=?
= + + + = 4 =
= 9 9 9 9 = 9 4 = 36 ()

 

13. .



1 = 10

1 = 10 = 100

1 = 10 = 100 = 1 000

1 = 1 000 = 10 000 = 100 000 = 1 000 000

 

14. .



1 = 1 000

1 = 100 = 100 000

1 = 10 = 1 000 = 1 000 000

 





15. .

,
:
==,
.


: =,
.

, - .

,
.
90.

,
.
90 .


,
.
90
.




<== | ==>
|
:


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