.


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3 ( 11 )




30 . 10 , 5 . ?

80-4= 95 - (37+5)=

35+9= 77 - (17+30)=

64+6= 85 - (5+50)=

1 + 4 =...

- 20 =... .

7 , - 3 .

. .

54 + ( - ), =14, =6

 

 

6 (17 )

3 9 , 5 .

?

2*8+49= (55-37):2=

2*7+25= (62-48):2=

(9+9):3= 8*(9:3)=

+ :2, =8, =34

9 , 3 . ?

2 , 5. .

6. 3*5 =, 2*9 =.

 

 

9 (18 )

27 , -36 , 9 , . ?

64:8*2:4= 20:5+(52-42)=

25+32:4-3= 30:6*10=

70-5*7+19= 94-40:5+11=

27:9*(40:5)= 20+5*5=

48:*4+, =6, =8

4. г

63:=9 - 43=25

12:3= 36:6 = 1 25 + 37 = 4 5:5 = 54+5 4=

г 24 6 3 .

45 5 5.

21 7 4 .

4 , 20 .

 

3

1 (24 )

18 , - 3 . ?

49+(27+1) 54:6-72:9 8468-2= 5*7+8*6= 6*9-50= 1-28= 18:2+7= 26+35=

3.г

96-=72 64:=8

4.

72 _ 3 16._1 41+18 _70

6 .

84 . 6 , 45 . ?

 

 

1 (24 )

45, 5 . ?

27+(46+3) = 81:9- 54:6=

72-38-4= 7*6+9*3=

8*9-70= 1- 67=

18:3+8= 46 +35=

3.г

*7= 28 -47=32

4.

1 _4 2 _24 61 +17 _90

4 3 .

56 . 8 , 24 . ?

 

 

4

2 (28 )

. ϳ, .

6832, 7504, 783, 7142, 6341, 63141.

.

60573+31258 462325-18986

.

327*7+ (4383-599): 8

4.

34 560 _ 45 26 35 _ 2635

4 276. 2 . ?

, 7 6 4 8, 17 9.

4,6,0.

 

 

5 (21 )

6 114 . 8 , 2 ?

4078*8+896:7

187* (334674-362)

840*405:270

600675:75+201*(400100-397964)

3.г

574+=720

+129347=601052

5 970+ 3 640

10 3 40

14 590+680

³ 324 6 . 3 . ?

, 9 5 5 7, 21 4.

4 7 .

 

 

8 (26 )

3 1 , 10 , 6 1 , 1 . , 1 ?

50103-(35073:9+3794)

20* (14057-27054:6)

213462:3+725832:4

536072:8-28362

600000-42070*7

4 40+8 990 9 480

6 350 2 480 + 5 680

. 8 , 4 . .

60 , 24 . ¾ , - . .

45 25 . 1800 . , ?

1/4 = */8 3/6 = */8 6/9 = */3 1/3 = */6

 

- 3

: ij (48:3). .

: 48: 3, , , , - , , ; , ; .

: .

: , .

ճ :

1.

2.

2.1.

2.2. .

7+8*3-2+17:6+71:9-5 *4+ 30:2+ 5:4 = 7

22:2, 42:2, 33:3, 36:3, 44:4, 82:2 55:1, 66:6, 77:0, 88:8, 99:1.

.

7; 21; 14; 35; 48; 49; 56.

. (7 , .)

? (48 7.)

, 7. (7; 14; 21; 35; 49; 56).

48? ( 6)

48 . (48 = 40 + 8)

48 , 4? (48 = 40 + 8; 48 = 36 + 12; 48 = 28 + 20; 48 = 24 + 24)

4 .

(36 + 12): 4 = 36: 4 + 12: 4 = 9 + 3 = 12

? (48)

(28 + 20): 4 = 28: 4 + 20: 4 = 7 + 5 = 12

? (48)

3.

3.1.

, .

3.2.

72 , 4.

(60 12 40 32)

60:4=15, 12:4=3, 15+3=18, 40:4=10, 32:4=8, 10+8=18

3.3.

770, .120

- . .

771

- .

3.4.

51:3= 52:2= 65:5= 98:7= 96:8= 75:5= 57:3= 72:4= 96:6=

3.5. (. 121-122)

772

, , .

(28 + 32): 4 = 15 (.)

³: 15 .

773

ϳ .

k

?, 3 <

k + k: , k = 45, 45 + 45: 3 = 60 ()

774

.

5 = 55

= 55: 5

= 11

³: 11.

1) : 18 14 , - . . (16 )

2) : .

29

31

4.





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