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

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

試卷答案

Section A

1. a) -3x and 4x
   b) -5
2. 7b – 4a
3. 90
4. 5
5. a) 384cm³
   b) 10
6. C
7. A
8. 2
9. 36 sq. units
10. -1
11. 10 sq. units
12. 4
13. 2
14. (-5, -1)
15. (11, 8)
16. 6
17. x = 310°
    y = 98°
18. 60°
19. 135°
20. 60°
21. ΔABC ≅ ΔCDA   or
    ΔACD ≅ ΔCAB
    Reason: RHS
22. ΔDEF ≅ ΔPRQ
    Reason SAS

Section B

23. a) 7y – 4 ≤ 16
    b) it is possible
24. $264
25. a) Mark C, D and F correctly
    b) i) Join the 4 vertics
        ii) 2
    c) G is reflected in the x-axis to A.  or
    G is translated 6 units upwards to A.
26. a) i) Plot A and B correctly.
    
        ii) 9
    b) -8 and -1
27. a) 66 cm²
    b) i) 462 cm³
        ii) Agree
28. a) i) 9
        ii) (0, 8)
    b) 107.5 sq. units
    c) 50 sq. units
29. a) –
    b) 64°
30. a) –
    b) CB is not perpendicular to BD.

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