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Lintel Feb 3 - 9 25 questions
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Monday 3 February 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 4,400,000 in standard form

    Answer: 4.4 × 106
  2. 2. Algebra

    Factorise: x² + 3x - 108

    Answer: (x + 12)(x - 9)
  3. 3. Geometry

    Adjacent = 24cm, angle = 49°. Find opposite. Give your answer to 2 decimal places

    Answer: 27.61cm
  4. 4. Ratio

    Divide 160 in the ratio 4:3:1

    Answer: 80, 60 and 20
  5. 5. Statistics

    Calculate the mean of: 40, 44, 36, 43, 35, 26. Give your answer to 2 decimal places

    Answer: 37.33

Tuesday 4 February 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 70,000 in standard form

    Answer: 7 × 104
  2. 2. Algebra

    Factorise: x² - 2x - 3

    Answer: (x + 1)(x - 3)
  3. 3. Geometry

    Adjacent = 24cm, angle = 44°. Find opposite. Give your answer to 2 decimal places

    Answer: 23.18cm
  4. 4. Ratio

    In ratio 3:7:8, what fraction is the first part?

    Answer: 1⁄6
  5. 5. Statistics

    The mean of 4 numbers is 30. If 3 of them are 47, 46, 21, what is the missing number?

    Answer: 6

Wednesday 5 February 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0013 in standard form

    Answer: 1.3 × 10-3
  2. 2. Algebra

    Factorise: x² + 2x - 15

    Answer: (x + 5)(x - 3)
  3. 3. Geometry

    Hypotenuse = 28cm, angle = 35°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 22.94cm
  4. 4. Ratio

    Orange, purple and pink beads are in the ratio 3:10:4. What fraction of the beads are orange?

    Answer: 3⁄17
  5. 5. Statistics

    Calculate the mean of: 8, 16, 13, 14, 38, 33, 44, 48

    Answer: 26.75

Thursday 6 February 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 74,000,000 in standard form

    Answer: 7.4 × 107
  2. 2. Algebra

    Factorise: x² + 6x - 7

    Answer: (x + 7)(x - 1)
  3. 3. Geometry

    Adjacent = 28cm, angle = 59°. Find opposite. Give your answer to 2 decimal places

    Answer: 46.6cm
  4. 4. Ratio

    Orange, purple and pink marbles are in the ratio 11:2:10. What fraction of the marbles are purple?

    Answer: 2⁄23
  5. 5. Statistics

    Calculate the mean of: 22, 19, 36, 17, 13, 8, 20, 39

    Answer: 21.75

Friday 7 February 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.086 in standard form

    Answer: 8.6 × 10-2
  2. 2. Algebra

    Factorise: x² - 8x + 12

    Answer: (x - 2)(x - 6)
  3. 3. Geometry

    Hypotenuse = 32cm, angle = 37°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 25.56cm
  4. 4. Ratio

    Simplify the ratio £6 : 60p

    Answer: 10:1
  5. 5. Statistics

    The mean of 4 numbers is 33. If 3 of them are 33, 26, 24, what is the missing number?

    Answer: 49