Daily Practice - Foundation Plus
Grades 4-6 - the Foundation / Higher crossover zone.
29th October 1999
- 1Changing the Subject of a Formula3 marks
Make x the subject of y = 5x^2 - 9.
- 2Proportion2 marks
3 identical notebooks cost £3.45. Work out the cost of 3 of the same notebooks.
- 3Pythagoras2 marks
A right-angled triangle has a hypotenuse of 20 cm and one shorter side of 16 cm. Work out the other shorter side.
- 4Probability Trees3 marks
A bag holds 4 red and 8 blue counters. One is taken, replaced, then another is taken. Work out the probability both are red.
- 5Averages from Frequency Tables3 marks
In a survey 4 households own 1 car, 3 own 2 cars and 9 own 3 cars. Work out the mean number of cars, to 2 decimal places.
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