數學試卷答案 – St. Stephen’s Girls’ College Form 1 Math Mid-Year Exam 2015-16

數學試卷答案 – St. Stephen’s Girls’ College Form 1 Math Mid-Year Exam 2015-16

試卷答案

Section A

1. \(-0.5, -\frac{1}{5}, 0.6, \frac{2}{3}, \frac{5}{7}\)
2. 0
3. 1260
4. 1/4 kg
5. \((b-a)\div\dfrac{c^{2}d}{2}\) or
   \((b-a)\div(c^{2} · \dfrac{d}{2})\)
6. a) 4
   b) -5a and a
   c) -1
7. 2xy + x
8. 12p – 7
9. a) x = -18
   b) x = 7
10. -18
11. 2x + 4 ≥ -4
12. 3/8 or a round angle
13. 60°
14. 9%
15. 80
16. \(6\frac{2}{3}%\)
17. $250
18. -4.8%
19. 320
20. 
21. Total number of small squares = 676
    Number of white small square = 76

Section B

22. -6
23. a) 15
    b)10
24. a) 0 km
    b) i) d = 3.5x – 10
        ii) any answer less than \(6\frac{6}{7}\) and not less than 0
25. No
26. a) and c)
    
    b) 84°
    d) i) ΔPNR is an isosceles triangle.
        ii) ΔPNQ is a right-angled triangle.
27. x = 7
28. a) 40
    b) Not possible
29. a) $50000
    b) 150

St. Stephen’s Girls’ College Form 1 Math Mid-Year Exam 2015-16 試卷