     . 2
  

  


2  #1
             2 .            .      ,  ,     ,  .     5 .     -,     .         ,    .    , , ,   .





 ,  

     . 2





      100.





 1




 

   ,     .

1. .    .

7,10,13,3,5,17,9,19,1,8,20.



2.   : , , 

, , , .



3. .

: 4. +3 . =7 .

8 . 4 . =

9 . 1 . =

2 . +7 . =

5 . +3 . =

4 . +6 . =

10 . 7 . =



4.  .

)   20 ,     10  .

   ?

)  30 ,    20  .   ?



5.  .

10 + 50 =60

90  50 =

70  40 =

30 + 20 =

20 + 80 =

70  20 =




 2.


1.       1 .

70,40,90,10,60,30.

80,



2. .    .

3,17,9,31,58,74,60,10,7,25



3.    : 17, 87, 50, 61, 35, 74.



 !

    .

1.  . (14)

2.     . (1)

3.  . (4)

4.   . (14 = 1 . 4.)



4. ,   : 

    ,     ,

 ,     ,   

 ,     , 

   .

28,



5. .    >, <, =.

31 54

17 9

26 16

36 27

18 81

58 78




 3


1.     95, 54, 29,83,71, 15.



2.  .

: 35 + 5 = 30 + 5 + 5 = 30 + 10 = 40

25 + 5=

95  5 =

35  30 =

45  5 =

75 + 5 =

85  80 =



3.  .

50  + 10  = 60 

85   5  =

60  + 10 =

95   90 =

35  + 5  =



4..   >, <,  =.



 !

1  = 60 

1  = 60 



3 .. 1

25  10 

1   60 

35   1 

1   1 .



5. .

  20 ,    30  .

  ?




 .


1.    .

3, 15, 8, 9 ,17, 20, 13, 6 12, 5



2.   ,     7 .

7, 17, 70, 27, 4, 47, 71, 70 ,77, 72



3.       5 .

1, 3, 10, 9, 7, 13, 8, 15, 6, 12



4.   : , , 

, , , , , .



5.  .

     9  ,  

  3  .     ?




 .


 1

1.      .

9, 13, 18 ,20, 6, 14, 5.



2.    : 13, 27, 74, 85, 91, 65.



3. .

15 + 5 =

30 + 20 =

9 + 7 =

75  5 =

100  60 =

20  8 =

55  50 =

80  50 =

5 + 5 =

4. .     2 .

10, 30, 60, 50, 80, 40



5. .

   10 ,    5 . 

   ?



 2

1.      .

14, 17, 1, 9, 8, 10, 19, 20



2.   : 14, 28, 37, 46, 51, 89



3. .

45 + 5 =

10 + 60 =

8 + 8 =

65  5 =

100  70 =

13  7 =

85  80 =

90  40 =

4 + 9 =



4. .     2 .

30, 70, 60, 90, 40, 100



5. .

   10 ,    5 . 

   ?




    .





 1


 !

    . 10 + (2+3)

     ,  

   . 10 + 2  3



1.   .   .

:15  5 + 2 = 12

5 + 7 -3 =

18  8 + 5 =

(18  2)  9 =

13  7 +9=

5 + 7  4 =

4 + (16  3) =



2. .  .   .

:  12    5  1.12 + (5+1) = 18

  5    6  2.

   15  5  8.

   45  5  20.

   85  80  3.



3.      .

(17  5) + 3 = 15

(45  5) + 30 =

9 + 7  4 =

5 + 8  7 =

75  5 + 20 =

5 + (55  50) =



4.   .

: 7 + 6 + 3 + 4 = (7 + 3) + (6 + 4) = 10 + 10 = 2

5 + 6 + 5 + 4 =

9 + 7 + 1 + 3 =

8 + 4 + 2 + 6 =

3 + 8 + 7 + 2 =



5.  .   .

   8 .     

 ,    2 .    

 ?




 2


 !

   .

1.  .

2.   .

)     .   

,      . 

     

)    ,     .

3.  .

4.  .



1.   .   .

5 + 7  3 =

17 + (20  17) =

12 + 4 + 4 =

(20 + 5) + 5 =

19 + 1  10 =

45  (25  20) =



2.  .

9 + 8 = 17

(45 + 5)  30 =

60  30 =

20 -13 =

100  20 + 5 =

20 + 5 =

8 + 9 =

50 + (65  60) =

70  50 =



3.  .    .

15 + 5  7 = 4

(14 + 6) + 50 = 70

9  4 + 8 = 13

70  (10  5) = 60

7 + 7  10 = 14

100  (50 + 10) = 50



4.  ,    5 ,  

  2 .    .



5. .

    10 .   5 .

7    .     ?

 ,    .

10  5 + 7

10 + 5 + 7

10 + 5  7




 .


1.  .

10  5 =

20  12 =

100  50 =

45 + 5 =

12 + 7 =

7 + 7 =

20 + 60 =

30+ 5 =

18  4 =

19  5 =

30 + 70 =

75  70 =



2.  .

    20 .  ,  

 ,   15.   ?



3.          .

  30 .

  10 .

  ? .



4.   .

20 + 5 + 10 + 5 =

6 + 1 + 9 + 4 =

4 + 2 + 16 + 8 =

13 + 8 + 7 + 12 =



5.   .   .

5 + 9  4 =

15  7 + 5 =

(30 + 5)  20 =

100  90 + 10 =

(85  5) + 20 =

(45 + 5)  30 =




 .


 1

1.  .

  90 .   30 

 .   .



2.   . .

5 + (75  5) =

55 + (14 + 1) =

70  30 + 10 =

60  (20 +30) =

45  (10 +20) =

20  16  7 =



3. ,    , 

   4 ,    3 .



4. .    >, <,  =

5 + 7  8  9 + 3  2

10 + (2 +5)  4 + (11  6)

20  10 + 8  20  (10 + 8)

70  10 + 5  (70  10) + 5



5. .  .

4  =  

10  = 

100  =  

7  =  



 2

1.  .

   40 .   

 20  .    ?



2.   . .

10 + (85  5) =

75 + (3 + 2) =

20  10 + 40 =

40  (80 -60) =

65  (25 -20) =

20  13 + 2 =



3. ,    , 

   5 ,    2 .



4. .    >, <,  =

7 + 2  4 1+ 6  2

3 + (12 -6) 20  12 + 6

20 + (4 + 1)  20  (40  20) + 5

100  (95  5) (65  60) + 20



5. .  .

9 =  

100  = 

10  =  

4  =  




     .





 1


 !

 .

1.  .27 + 2 =

2. 27    .  

    .



3.  ,   27   

.

27 + 2 = 20 + 7 + 2

4.  .

20 + (7+ 2) = 20 + 9

5.    .

20 + 9 = 29

6.  . 27 + 2 = 29

1.     34, 12, 87, 56

2.   .

: 35 + 3 = 30 + 5 + 3 = 30 + 8 = 38

44 + 4 =

51 + 8 =

37 + 2=

24 + 5 =

62 + 3=



3.  .

32 + 6 =

25 + 30 =

43 + 10 =

47 + 20 =

51 + 8 =

87 + 2 =



4. .

40 + 27 =

60 + 19 =

80 + 12 =

36 + 30 =

70 + 15 =



5.  .    .

43 + 3 = 47

24 + 30 = 54

34 + 2 = 36

60 + 12 = 85

17 + 50 = 67

56 + 10 = 56




 2




 !

 .

1.  .36  2 =

2. 36    .   

    .








3.  ,   36  

 .

36  2 = 30 + 6  2

4.  .

30 + (6  2) = 30 +4

5.    .

30 + 4 = 34

6.  . 36  2 = 34



1.   .

: 59  4 = 50 + (9  4) = 50 + 5= 55

57  3 =

48  4 =

69  5 =

43  2 =

86  9 =



2.  .

36  4 =

87  6 =

32  1 =

75  3 =

95  4 =

48  7 =



3.   .



 !

   ,    

 .

39  20 = 30  20 + 9 = 10 + 9 = 19

74 = 3 = 70 + (4  3) = 70 + 1 = 71



54 10 =

76  20 =

81  50 =

97  40 =

64  30 =



4.  .

81  50 =

42  20 =

33  10 =

44  30 =

86  50 =

95  70 =



5.  .

   37 . 20   

.     ?




 3




 !

 .

1.  . 26 + 4 =

2. 26    .   

    .








3.  ,   26   .

26 +4 = 20 + 6 + 4

4.  .

20 + (6 + 4) = 20 +10

5.    .

20 + 10 = 30

6.  . 26 + 4 = 30



1.   .








37+ 3 =

25 + 5 =

76 + 4 =

42 + 8 =

64 + 6 =



2.  .

74 + 6 =

35 + 5 =

93 + 7 =

27 + 3 =

42 + 8 =

89 + 1 =



3.   .

: 60  3 = 50 + (10 -3) = 50 + 7= 5

30  9 =

50  4 =

70  5 =

40  7 =

90  2 =



4.  .

90  8 =

50  2 =

40  4 =

60  5 =




  .


   .

   ,     (https://www.litres.ru/book/mariya-nikolaevna-al/podgotovka-k-kontrolnym-rabotam-po-matematike-2-klass-36974166/chitat-onlayn/)  .

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