數學試卷答案 – St. Stephen’s Girls’ College Form 1 Math Mid-Year Exam 2019-20

數學試卷答案 – St. Stephen’s Girls’ College Form 1 Math Mid-Year Exam 2019-20

試卷答案

Section A

1. -6, -5, +0.7, +0,715, +1
2. 180
3. -6
4. 18
5. a) False
   b) False
   c) False
6. \(\dfrac{a-b}{c^{2}}\)
7. 2
8. 4
9. 7
10. 21 kb
11. -34
12. 37 mins
13. a) \(x^{2}+5 > 13\)
    b)\(\dfrac{20}{y+4} \geqslant 9\)
14. -5
15. B
16. a) ΔABE
    b) ΔDEF
17. (draw the sector as shown in the question)
18. 250%
19. 360
20. \(+\dfrac{50}{3}%\ or +16\dfrac{2}{3}\)
21. 543
22. $432
23. $3600
24. 28.5 cm²

Section B

25. a) overall loss is $2200
    b) It is impossible.
26. a) 16a – 4
    b) y = -10
27. a) 118 cm
    b) i) 24 cm
        ii) 840 cm²
28. a) 150 -4x ≤ 120
         or 11x + 15(10 – x) ≤ 120
    b) Cannot
    c) 8 or 9
29. x = 70°
    y = 40°
30. a) 48
    b) 57.5%
31. a) 48
    b) $268
    c) The claim is correct.

St. Stephen’s Girls’ College Form 1 Math Mid-Year Exam 2019-20 試卷