Вопрос:

Решите примеры с карточки.

Ответ:

Выполняю решение примеров.




  1. 90 + (2 × 9 – 8) + 9 ∶ 1



    1. 2 × 9 = 18

    2. 18 – 8 = 10

    3. 9 ∶ 1 = 9

    4. 90 + 10 + 9 = 109


    Ответ: 109




  2. 170 – (41 + 19 – 15) ∶ 3



    1. 41 + 19 = 60

    2. 60 – 15 = 45

    3. 45 ∶ 3 = 15

    4. 170 – 15 = 155


    Ответ: 155




  3. (108 – 107) × (81 ∶ 9 + 32 ∶ 4)



    1. 108 – 107 = 1

    2. 81 ∶ 9 = 9

    3. 32 ∶ 4 = 8

    4. 9 + 8 = 17

    5. 1 × 17 = 17


    Ответ: 17




  4. (8 × 5 + 3 × 6) ∶ (30 – 29)



    1. 8 × 5 = 40

    2. 3 × 6 = 18

    3. 40 + 18 = 58

    4. 30 – 29 = 1

    5. 58 ∶ 1 = 58


    Ответ: 58




  5. (108 – 72) ∶ (20 – 14) + 28



    1. 108 – 72 = 36

    2. 20 – 14 = 6

    3. 36 ∶ 6 = 6

    4. 6 + 28 = 34


    Ответ: 34




  6. (8 × 4 – 15) ∶ (13 – 6) + 5



    1. 8 × 4 = 32

    2. 32 – 15 = 17

    3. 13 – 6 = 7

    4. 17 ∶ 7 = 2,43

    5. 2,43 + 5 = 7,43


    Ответ: 7,43




  7. 48 ∶ (2 + 6) + 7 × (5 – 1)



    1. 2 + 6 = 8

    2. 5 – 1 = 4

    3. 48 ∶ 8 = 6

    4. 7 × 4 = 28

    5. 6 + 28 = 34


    Ответ: 34




  8. (9 × 5 – 15) ∶ 3 + 8 × (4 – 2)



    1. 9 × 5 = 45

    2. 45 – 15 = 30

    3. 4 – 2 = 2

    4. 30 ∶ 3 = 10

    5. 8 × 2 = 16

    6. 10 + 16 = 26


    Ответ: 26




  9. (7 × 9 – 33) + (28 ∶ 4 – 2)



    1. 7 × 9 = 63

    2. 63 – 33 = 30

    3. 28 ∶ 4 = 7

    4. 7 – 2 = 5

    5. 30 + 5 = 35


    Ответ: 35




  10. (72 – 45) ∶ (14 – 5) + (6 × 3)



    1. 72 – 45 = 27

    2. 14 – 5 = 9

    3. 6 × 3 = 18

    4. 27 ∶ 9 = 3

    5. 3 + 18 = 21


    Ответ: 21



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