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3. Calculează, respectând ordinea operaţiilor: (4 + 3) x 7 = 7x (6+4)= (8+7) x 9 = (2+9)×6= (10-3) x 6 = (26-3)x7 = (1 000-990) x 10 = 8 x (100-25) = (45+15): 10 = (100-19): 9 = (27+8): 7 = (90-34): 8 =​

Răspuns :

Răspuns:

1. \((4 + 3) \times 7 = 7 \times 7 = 49\)

2. \(7 \times (6+4) = 7 \times 10 = 70\)

3. \((8+7) \times 9 = 15 \times 9 = 135\)

4. \((2+9) \times 6 = 11 \times 6 = 66\)

5. \((10-3) \times 6 = 7 \times 6 = 42\)

6. \((26-3) \times 7 = 23 \times 7 = 161\)

7. \((1 000-990) \times 10 = 10 \times 10 = 100\)

8. \(8 \times (100-25) = 8 \times 75 = 600\)

9. \((45+15) : 10 = 60 : 10 = 6\)

10. \((100-19) : 9 = 81 : 9 = 9\)

11. \((27+8) : 7 = 35 : 7 = 5\)

12. \((90-34) : 8 = 56 : 8 = 7\)