12. 23 degrees above zero
13. Walking 15 blocks north
14. A weight loss 20 kg
15. Going 8 steps down the stairs
16. Raising a flag 15 m high
17. Going up the stairs by 12 steps
18. Moving a chair 2 m backward
19. Accelerating by a 5 m per second
20. Climbing a mountain 750 m high
21. A drop of 5°C temperature
22. Winning by 10 points in a game
23. Moving 9 sidesteps to the left
24. An increase of 900 pesos in allowance
25. Marching 120 steps to the right
Answers & Comments
1. - 50
2. - 30
3. - 15
4. + 2
5. - 10,000
6. - 40
7. + 700
8. + 300
9. + 10
10. + 2,000
11. + 8
12. - 23
13. + 15
14. - 20
15. - 8
16. + 15
17. + 12
18. - 2
19. + 5
20. + 750
21. - 5
22. + 10
23. - 9
24. + 900
25. + 120