A. Verify if the following equations are correct. Put a √ if the answer is correct and if it is wrong, write the correct answer.


1. 2 +7x3-5=18

2. 5x ( 4 + 2 x 22 ): 10 =3

3. 42 - 4x3+ (5-2)' = 31

4. 16 = 4 x 5 -7 +8= 21

5. 4+ [(2-1) + (6 + 4)1 = 15

6. 36 = 9+10 = 14

7. (3 + 5)2 - (5 + 2)2 = 30

8. 25- 8 + 57 = 81

9. 132 +150 = 5 = 64

10. 12 x 30 + (90 = 2) =405