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Сложение вида 36 + 2, 30 + 24. Вычитание вида 36 – 2, 36 – 20. Вычитание вида 30 – 4. Вычитание вида 60 – 24. Сложение вида 26 + 7



Сложение вида 36 + 2, 30 + 24

 

           36 + 2 =                                                            30 + 24 =

            / \                                                                                          / \

         30 6                                                                                    20 4

     30 + ( 6 + 2 ) = 38                                        ( 30 + 20 ) + 4 = 54

Единицы складывают  с единицами. Десятки складывают с десятками.

1. Вычисли с устным объяснением.

17 + 2 =                    20 + 15 =                  10 + 88 =                     28 + 70 =

/ \                                       / \                              / \                         / \

 

60 + 18 =                  70 + 19 =                   22 + 7 =                       43 +6 =

    / \                              / \                       / \                                  / \

 

56 + 3 =                    61 + 4 =                     91 + 7 =                       25 + 4 =

/ \                               / \                               / \                                 / \         

 

70 + 24 =                  50 + 34 =                   35 + 60 =                      4 + 32 =

   / \                               / \                       / \                                        / \       

    

2. «Разбей» числа на десятки и единицы. Реши.

31 + 7=                 76 + 3 =            34 + 4 =               56 + 3 =            36 + 20 = 

 

80 + 14 =              30 + 12 =          30 + 62 =             70 + 24 =               25 + 3 =

 

62 + 10 =              22 + 60 =          33 + 6 =               62 + 20 =          81 + 8 =

 

82 + 4 =                30 + 25 =          20 + 71 =             53 + 40 =          60 + 27 =

 

73 + 5 =                15 + 80 =          82 + 10 =             20 + 78 =          32 + 60 =                                      

 

2. Реши самостоятельно, рассуждая.

24 + 3 =     41 + 50 =     23 + 60 =      50 + 14 =      37 + 2 =       42 + 30 =

72 + 20 =   20 + 69 =     56 + 40 =      57 + 30 =      41 + 20 =     23 + 50 =

18 + 30 =   4 + 34 =       4 + 72 =        17 + 80 =      54 + 30 =      3 + 65 =

20 + 36 =   54 + 20 =     26 + 3 =        8 + 31 =        3 + 62 =        57 + 2=

44 + 5 =     3 + 71 =       17 + 40 =         24 + 70 =      57 + 1 =        45 + 50 =

36 + 40 =   81 + 7 =       36 + 50 =      56 + 30 =      63 + 5 =        36 + 3 =

35 + 20 =   54 + 30 =     76 + 20 =      56 + 20 =      37 + 60 =       21 + 50 =

4 + 42 =     56 + 3 =       5 + 43 =         4 + 63 =       2 + 56 =        5 + 42 =

50 + 35 =   40 + 37 =     20 + 76 =      10 + 56 =      40 + 29 =      30 + 34 =

45 + 3 =     57 + 2 =       56 + 3 =         32 + 7 =       42 + 5 =        75 + 4 =

 

Внетабличное сложение

                                         Сложение вида 26 + 4

                

              26 + 4 =                                 95 + 5 =

                / \                                                  / \

             20 6                                             90 5                                        

         20 + ( 6 + 4 ) = 30                  90 + ( 5 + 5) = 100

1. Вычисли с устным объяснением.

12 + 8 =                       53 + 7 =                     36 + 4 =                    93 + 7=

/ \                                 / \                                / \                              / \

 

43 + 7 =                       68 + 2 =                      91 + 9 =                    27 + 3 =

/ \                                 / \                                 / \                              / \

 

81 + 9 =                      3 + 47 =                       27 + 3 =                    2 + 98 =

/ \                                       / \                           / \                                    / \

 

65 + 5 =                      3 + 67 =                       4 + 96 =                    5 + 45 =

/ \                                       / \                                 / \                               / \

 

2. «Разбей» числа на десятки и единицы. Реши.

78 + 2 =           83 + 7 =            1 + 29 =               3 + 47 =             5 + 35 =

 

64 + 6 =           4 + 76 =            33 + 7 =               77+ 3 =              4 + 56 =

 

41 + 9 =           85 + 5 =            17 + 3 =               4 + 76 =             62 + 8 =

 

97 + 3 =           15 + 5 =            4 + 96 =               37 + 3 =             42 + 8 =

 

73 + 7 =            5 + 85 =            56 + 4 =               6 + 44 =             51 + 9 =

 

56 + 4 =          1 + 99 =             2 + 68 =                67 + 3 =            5 + 65 =

3. Реши самостоятельно, рассуждая.    

64 + 6 =      86 + 4 =      15 + 5 =       6 + 44 =          8 + 82 =         7 + 53=

33 + 7 =      91 + 9 =      47 + 3 =       6 + 94 =          54 + 6 =         27 + 3 =

18 + 2 =      3 + 77 =      4 + 66 =       1 + 69 =          2 + 58 =          7 + 43 =

5 + 95 =      6 + 74 =      53 + 7 =       62 + 8 =          22 + 8 =         88 + 2 =

64 + 6 =      99 + 1 =      17 + 3 =       98 + 2 =          84 + 6 =          36 + 4 =

7 + 53 =      6 + 54 =      2 + 98 =       64 + 6 =          4 + 46 =          3 + 57 =

93 + 7 =      74 + 6 =      32 + 8 =        75 + 5 =          64 + 6 =          57 + 3 =

56 + 4 =      77 + 3 =      33 + 7 =       22 + 8 =          11 + 9 =          13 + 7 =

55 + 5 =      66 + 4 =      99 + 1 =       7 + 53 =           2 + 58 =         3 + 47 =

1 + 69 =      2 + 28 =      3 + 37 =       4 + 46 =           5 + 55 =         6 + 64 =

7 + 73 =      8 + 82 =      9 + 91 =       1 + 99 =           2 + 48 =         24 + 6 =

35 + 5 =      56 + 4 =      67 + 3 =       78 + 2 =           89 + 1 =         91 + 9 =

Внетабличное вычитание

Вычитание вида 36 – 2, 36 – 20

                           36 –2                                 36 – 20

                                / \                                             / \

                            30 6                                       30 6

                      30 + ( 6 – 2 ) = 34              ( 30 – 20 ) + 6 = 16

Единицы вычитают из единиц. Десятки вычитают из десятков.

      1. Вычисли с устным объяснением.    

86 – 5 =                      86 – 50 =                        77- 6 =                      77 - 60 =

/ \                                        / \                                           / \                                     / \                  

 

78 – 6 =                     78 – 60 =                        44 – 3 =                     44 – 30 =  

/ \                                      / \                                            / \                                      / \           

 

56 – 4 =                     56 –40 =                         89 – 7 =                     89 –70 =

/ \                               / \                                     / \                               / \

 

65 – 4 =                     65 –40 =                         96 – 5 =                      96 – 50 =

/ \                               / \                                    / \                                 / \       

 

2. «Разбей» числа на десятки и единицы. Реши.

47 – 2 =            54 – 3 =             78 – 6 =               54 – 2 =          16 – 4 =

 

64 – 20 =          54 – 30 =            78 – 60 =             54 – 20 =        26 – 10 =

 

34 – 3 =            63 –2 =                76 – 5 =              53 – 1 =          19 – 7 =

 

16 – 5 =            27 – 10 =             56 – 30 =             64 – 30 =        96 – 90 =

 

37 – 7 =            36 – 3 =                79 – 6 =              57 – 6 =           46 – 6 =

 

58 – 30 =          47 – 20 =              87 – 60 =             47 – 10 =        54 – 50 =

 

3. Реши самостоятельно, рассуждая.  

88 – 2 =        94 – 2 =        54 – 3 =         56 – 5 =       17 – 3 =       84 – 6 =

67 – 30 =      86 – 70 =         78 – 50 =       72 – 60 =      92 – 40 =    56 – 50=

82 – 50 =      76 – 50 =      59 – 8 =         46 – 3 =       46 –30 =      86 –30 =

73 –50 =       77 – 5=         36 – 10 =       62 – 40 =      67 – 10 =    72 – 30 =

68 – 4 =        65 – 2 =             99 – 8 =         88 – 5 =        13 – 2 =      26 – 4 =

68 – 40 =      65 – 20 =      99 – 80 =       88 – 50 =      27 – 20 =    76 – 40=

29 – 5 =        38 – 6 =        47 – 5 =         56 – 4 =         32 – 1 =     43 – 2 =

45 – 30 =      43 – 20 =      78 – 60 =       83 – 40 =       74 – 50 =   74 – 20 =

Внетабличное вычитание

Вычитание вида 30 – 4

30 – 4 =

                                                             / \

20 10

                                           20 + ( 10 – 4 ) = 26

30      40        50         60       70      80         90       100 / \         / \          / \             / \          / \         / \             / \            / \ 20 10  … 10   … 10       … 10  … 10  … 10       … 10    … 10

1. Вычисли с устным объяснением.

50 – 6=                     30 – 5 =                         100 – 4 =                   60 – 8 =

/ \                              / \                                    / \                              / \

 

70 – 4 =                    40 – 5 =                          100 – 9 =                   100 – 2 =

/ \                               / \                                    / \                                 / \    

 

80 – 3 =                     20 – 4 =                           30 – 5 =                    40 – 6 =

/ \                               / \                                     / \                               / \

 

90 – 4 =                     50 – 6 =                            60 – 3 =                    20 – 5 =

/ \                               / \                                       / \                              / \

2. «Разбей» числа на круглые десятки по образцу. Реши.

70 – 8 =           80 – 4 =             90 – 3 =           100 – 4 =           20 – 3 =

 

20 – 7 =           30 – 6 =             40 – 8 =            50 –3 =              60 – 2 =

 

70 – 9 =           80 – 1=              90 – 6 =            20 – 3 =             100 – 9 =

 

40 – 7=            40 – 9 =             30 – 4 =            50 – 5 =             60 – 4 =

 

70 – 7 =           80 – 8 =             90 – 9 =            100 – 4 =           20 – 2=

3. Реши самостоятельно, рассуждая.

20 – 1 =      30 – 2 =        40 – 3 =      50 –4 =         60 – 5=         70 – 6 =

80 – 7 =      90 – 8 =        100 – 9 =    20 – 9 =        30 – 8 =        40 – 7 =

50 – 6 =      60 – 5 =         70 – 4 =     80 – 3 =        90 – 2 =        100 – 1 =

20 – 2 =      30 - 4 =         40 – 5 =     50 – 6 =        60 – 7 =        70 – 8=

80 – 9 =     100 – 1 =        20 – 1 =     30 –2 =          40 – 3 =        50 – 4 =

60 – 5=       70 – 6 =         80 – 7 =     90 – 8 =         100 – 9 =      20 – 4 =

30 – 5 =      40 – 6 =         50 – 7 =     60 – 8 =         70 – 9 =        90 – 2 =

100 – 4 =    20 – 9 =         30 – 1 =     40 – 2 =          50 – 3 =       60 –4 =

70 – 5 =      80 – 6 =         70 – 4 =     90 – 7 =          20 – 7 =       30 – 8 =

40 – 9 =      50 – 7 =         70 – 1 =     80 – 2 =          90 – 3 =       100 – 4 =

Вычитание вида 60 – 24

60 – 24 =

/ \

20 4

                                                (60 – 20) – 4 = 36

1. Вычисли с устным объяснением.

70 – 28 =                     90 – 39                 40 – 28 =                     80 – 67 =

   / \                                 / \                          / \                                 / \

 

30 – 23 =                     40 – 36 =              50 – 21 =                      80 – 76 =

   / \                                 / \                           / \                                  / \

 

40 –14 =                      100 – 44 =             70 – 29 =                      100 – 21 =

  / \                                     / \                         / \                                    / \

 

50 – 36 =                     70 –23 =                80 – 77 =                       40 – 34 =

   / \                                / \                            / \                                    / \

 

2. «Разбей» числа на десятки и единицы. Реши.

40 –15 =              70 – 18 =           100 – 18 =        50 – 46 =           30 –22 =

 

50 – 46 =             80 – 73 =           80 – 19 =          30 – 23 =           50 – 36 =

 

60 –57 =              40 – 33 =           40 – 36 =          40 – 16 =           100 – 34 =

 

80 – 57 =             30 –18 =            30 – 12 =          70 – 16 =           100 – 78 =

 

50 - 47 =               30 – 29 =            50 – 38 =          40 – 27 =           50 – 36 =

  

3. Реши самостоятельно, рассуждая.

50 – 32 =       30 – 21 =     50 – 43 =     60 – 56 =   30 – 26 =    60 – 44 = 80 – 75 =       90 – 56 =    100 – 98=    40 – 17 =   70 – 48 =    90 – 81 = 

90 – 72 =         60 – 31 =      70 – 48 =     90 – 66 =   90 – 24 =    90 – 75 = 100 – 87 =    60 – 43 =      70 – 67 =     100 – 17 = 80 – 57 =    80 – 16 = 60 – 12 =      70 – 34 =      60 – 57 =     90 – 12 =   60 – 28 =    50 – 23 =

40 – 23 =      40 – 14 =      70 – 29 =     80 – 76 =   40 – 24 =    50 – 25 = 70 – 51 =      70 – 31 =      70 – 54 =     50 – 43 =   70 – 32 =    100 – 99 = 100 – 56 =    80 – 37 =      90 – 51 =     60 – 43 =   80 – 54 =    60 – 51 = 80 = 31 =      80 – 44 =      50 – 32 =     60 – 45 =   70 – 53 =    80 – 54 = 90 – 73 =      80 – 56 =      70 – 43 =          60 – 43 =   90 – 72 =    80 – 65 =

40 – 23 =      50 – 32 =      60 – 45 =     70 – 53 =   80 – 54 =    80 - 53 =

60 – 45 =      70 – 32 =      80 – 34 =     80 – 65 =   90 – 64 =    40 – 32 =

50 – 34 =      60 – 23 =      30 – 13 =     30 – 23 =   90 – 72 =    70 – 45 =

 

Внетабличное сложение

Сложение вида 26 + 7

26 + 7 =

                                                                     / \

4 3

                                           (26 + 4) + 3 = 33

1. Вставь нужное число.

38 + 5                                            64 + 9                                      23 + 8

38 + 2 + … =                                 64 + 6 + … =                     23 - … - … =

 

75 + 8                                             49 + 6                                 47 + 5

75 + … + … =                              49 + … + … =                     47+ … + … =

 

2. Вычисли с устным объяснением.  

63 + 9 =                         54 + 8 =                  73+ 9 =                     43 + 9 =

  / \                                    / \                           / \                                / \

 

76 + 6 =                         63 + 9 =                  86 + 8 =                     56 + 8 =

   / \                                   / \                            / \                                / \

 

62 + 9 =                          75 + 6 =                 32 + 9 =                      39 + 7 =

  / \                                     / \                           / \                                / \

 

46 + 8 =                           46 + 8 =                 27 + 8 =                      48 + 5 =

   / \                                     / \                            / \                                / \

 

1. «Разбей» второе слагаемое на удобные слагаемые.

57 + 8 =            72 + 9 =            44 + 9 =               78 + 8 =          76 + 6 =

 

37 + 8 =            36 + 7 =            45 + 7 =               56 + 7 =          88 + 7 =

 

24 + 7 =            25 + 6 =           74 + 9 =                57 + 7 =          92 + 9 =

 

77 + 8 =           44 + 8 =            66 + 5 =                54 + 8 =          55 + 7 =

4. Реши самостоятельно, рассуждая.

56 + 8 =    45 +6 =       39 + 9 =      65 + 7 =       87 + 4 =        23 + 8 =

34 + 8 =    47 + 7 =      26 + 9 =      74 + 8 =       48 + 9 =        43 + 9 =   22 + 9 =    53 + 8 =      29 + 4 =      67 + 8 =       58 + 7 =        56 + 8 = 54 + 7 =    58 + 3 =      84 + 8 =      63 + 8 =       78 + 8 =        44 + 7 = 47 + 7 =    53 + 8 =      26 + 7 =      26 + 9 =       73 + 8 =        13 + 9 = 14 + 8 =    23 + 7 =      34 + 7 =      34 + 8 =       36 + 7 =        35 + 6 = 46 + 7 =    56 + 5 =      67 + 5 =      78 + 8 =       89 + 7 =        23 + 9 = 34 + 7 =    34 + 9 =      54 + 7 =      65 + 8 =       65 + 7 =        76 + 5 =

85 + 7 =    67 + 5 =      27 + 8 =      17 + 5 =       26 + 9 =        27 + 8 =

35 + 9 =    42 + 9 =         54 + 8 =      65 + 8 =       45 + 8 =        83 + 8 =

 



  

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