Question

observa exercitiile scrise in casete.În care dintre aceastea nu se schimba raspunsul daca omitem parantezele? colereaza casetele corespunzatoare.8×(9-5). (23+28)+39. (5×2)×4. (8×9)-5. 22+(28+39). 5×(2×4) 48-(13-9). (12÷4)+2 27÷(9÷3) (42-23)-9 12÷(4+2) (27÷9)÷3.​

Answer 1

Răspuns:

Explicație pas cu pas:

8×(9-5) = 8 × 4 = 32

8×9 - 5 = 72-5 = 67

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(23+28)+39 = 51+39 = 90

23+28+39 = 51 + 39 = 90

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(5 ×2)×4 = 10×4 = 40

5×2×4 = 10×4​ = 40

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(8×9)-5 = 72-5 = 67

8 ×9-5 = 72-5 = 67

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22+(28+39) = 22 + 67 = 89

22+28+39 = 50+39 = 89

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5×(2×4) = 5 ×8 = 40

5×2× 4 = 10×4 = 40

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48-(13-9) = 48 - 4 = 44

48-13 -9 = 35-9 = 26

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(12÷4)+2 = 3 +2 = 5

12: 4+2 = 3+2 = 5

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27÷(9÷3) = 27:3 = 9

27:9:3 = 3:3 = 1

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(42-23)-9 = 19-9 = 10

42-23-9 = 19-9 = 10

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12÷(4+2) = 12:6 = 2

12:4 +2 = 3+2 = 5

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(27÷9)÷3. = 3:3 = 1

27:9:3 = 3:3 = 1

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