Class 1A
- Percentages, answer keys to "Challenging questions" are:
Q7. The cost is $ 800
Q8. The profit percentatge is 56.25 %
Q9. The marked price is $920 while the cost of the printer is $ 781.25
Q10. The cost of the dictionary is $ 80.15625 while the profit percentage is 700/57 %
Q11 (a) There are 33750 candidates, in which 15625 of them are male.
Q11 (b) There are 6775 male candidates meeting the minimum requirements to enter university.
Statistics to Quiz (the one done in class): MC (full mark is 30) + LQ (full mark is 14)
MC (out of 15 questions) --- waiting for the scan
LQ (out of 14 marks) --- it is interesting that none of you scores 3, 4 or 7
highest = 14; lowest = 1; mode = {10, 14};
mean = 8.87 (cor. to 3 sig. fig.); standard deviation = 3.6610 (cor. to 5 sig. fig.);
median = 9; upper quartile = 12; lower quartile = 6
Normal-level Quiz (submit to http://goo.gl/forms/b4TmzjsXKx as soon as possible, if you wish to be graded)
Super-hard Quiz (submit to http://goo.gl/forms/a080GidR1H as soon as possible, if you wish to be graded)
- Statistics
Answers to the "extra questions" distributed on the "day of correction(s)"
You may further study statistics by digging out the meanings of mode, mean, standard deviation, median, upper
quartile, lower quartile, etc., and hence figure out how good/poor you are in your class. If Ms. Lee tell that
there are 5 students getting 14 marks this time, you would be able to find out all the 31 scores of your class ~XD
Believe it or not~?!
- Congruences and Similarities
Games to play --- SSS: (9cm, 10cm, 11cm), (6cm, 8cm, 10cm), (7cm, 7cm, 7cm), (5cm, 6cm, 8cm)
SAS + ASA: (5cm, 30°, 8cm), (4cm, 50°, 7cm), (9cm, 110°, 12cm);
(20°, 10cm, 50°), (40°, 8cm, 60°), (30°, 5cm, 120°)
AAS (+SSA) + RHS: (20°, 50°, 10cm), (80°, 80°, 7cm), (40°, 70°, 4cm);
(30°, 6cm, 3cm), (45°, 5cm, 4cm), (60°, 8cm, 6cm), (90°, 3cm, 5cm);
(90°, 5cm, 12cm), (90°, 4cm, 8.5cm)
- Rate and Ratio
Class 5A
- Equations of Circles
- Ex.7A Q8, Quick Practice 7.13
- Ex. ?
- Applications of Graphs and Functions
- To draw a transformed graph more accurately (and hence more "beautifully"), please refer to the 2nd page.
- Summary
- Ex.