INTEGERS (3)

1. Initially, Jane is in a lift on the 12^th floor of a building. Then the lift moves down 5 floors. On which floor is Jane now?
2. A submarine dived 72 m into the ocean. Then it went up by 37 m. How far is it from the surface of the sea?
3. The price of a share of a company on Monday was 85 sen. On Tuesday, it went up by 7 sen. On Wednesday, it fell by 9 sen. What is the price of the share at the end of Wednesday?
4. A bird is flying at a height of 45 m above sea level. Then it flies up another 10 m before flying down 18 m. What is the bird’s height above sea level now?
5. Azlyn’s office is on the 13^th floor. She went down 9 floors to go to the cafeteria. Then, she went up 6 floors to meet her friend. At which floor is her friend’s office?

INTEGERS (2)

1. 4 – (+7) =
2. 6 – (+4) =
3. 8 – (-3) =
4. -5 – (+2) =
5. -3 – (-6) =
6. -8 – (-2) =
7. -4 – (-7) – (-5) =
8. -12 – (-8) – 6 =
9. 12 + (-9) – 24 =
10. -9 – 15 + 28 =
11. 25 – 6 + (-8) =
12. 7 + (-2) + (-8) =

INTEGERS (1)

Simplify:

1. 7 + (-4) =
2. -8 + 10 =
3. 16 + (-4) =
4. -15 + (-5) =
5. -21 + (-3) =
6. 12 + (-9) =
7. 15 + (-17) =
8. -11 + (-3) =
9. -3 + (-8) =
10. -31 + (-19) =
11. -9 + (-6) =
12. 24 + (-18) =
13. -13 + (-14) =
14. -7 + (-10) =
15. 6 + (-5) + (-4) =
16. 9 + (-5) + 3 =
17. -11 + (-3) + 9 =
18. -4 + 8 + (-9) =
19. 9 + (-8) + (-3) =
20. -2 + (-9) + 4 =