德望學校 – S1數學 1A Chapter 1 Directed Numbers & the Number Line – CQ (13-18)

試卷答案:

1. a) -39.5
   b) -15
2. 3
3. a) 31.5 (°C)
   b) Yes, I agree.
4. -1.59
5. Ada achieves a better result than Tom does.
6. -5/2
7. Tom cannot enter the second round.
8. 3
9. a) -1/3
   b) \(-7\tfrac{2}{3}\)
10. a) -6 kb
    b) 46.5 kg
11. a) A = -2.5, B = -0.5
    b) 7
12. a) -10 < -3 < -1/4 < 0 < 19/4 < +5
    b) 2
13. a) -8/3
    b) 1/20
14. a) 71
    b) I disagree

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