Question

EXERCISE 1.2

Use brackets (where necessary) to make the statements true.
1. (2 + 3)x 4 + 5 = 25.
2. 2 × 3 + 4 × 5 = 26.
3. 2 + 3 × 4 + 5 = 29.
4.2+3x42=80
5. 2 × 3 + 4 × 5 = 46.
6. 5+4x3-2=15.
7. 2 × 3 + 4 × 5 = 50.
8. 2 × 3 + 4 × 5 = 70.
9. 2 + 3 × 4 + 5 = 45.
10.2+3x4=50.

Answer 1

Explanation:

1. (2 + 3) × 4 + 5 = 25. (Original statement, already true)

2. 2 × (3 + 4) × 5 = 26.

3. (2 + 3) × (4 + 5) = 29.

4. 2 + (3 × 42) = 80.

5. 2 × (3 + 4 × 5) = 46.

6. (5 + 4) × (3 - 2) = 15.

7. 2 × (3 + 4) × 5 = 50. (Original statement, already true)

8. 2 × (3 + 4 × 5) = 70.

9. (2 + 3 × 4) + 5 = 45.

10. 2 + (3 × 4) = 50.

Brackets have been added to statements 2, 3, 4, 5, 6, 8, 9, and 10 to make them true.