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Lintel Mar 3 - 9 25 questions
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Monday 3 March 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 26,000 in standard form

    Answer: 2.6 × 104
  2. 2. Algebra

    Factorise: x² - 2x - 48

    Answer: (x + 6)(x - 8)
  3. 3. Geometry

    Adjacent = 20cm, angle = 30°. Find opposite. Give your answer to 2 decimal places

    Answer: 11.55cm
  4. 4. Ratio

    £120.00 is shared between A and B in the ratio 3:2. How much does A receive?

    Answer: £72.00
  5. 5. Statistics

    Calculate the mean of: 10, 7, 26, 15, 15, 6, 26, 36. Give your answer to 2 decimal places

    Answer: 17.63

Tuesday 4 March 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 5,900,000 in standard form

    Answer: 5.9 × 106
  2. 2. Algebra

    Factorise: x² - x - 90

    Answer: (x + 9)(x - 10)
  3. 3. Geometry

    Adjacent = 23cm, angle = 41°. Find opposite. Give your answer to 2 decimal places

    Answer: 19.99cm
  4. 4. Ratio

    Express the second part of 10:5 as a fraction in simplest form

    Answer: 1⁄3
  5. 5. Statistics

    The mean of 4 numbers is 28. If 3 of them are 35, 46, 25, what is the missing number?

    Answer: 6

Wednesday 5 March 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.062 in standard form

    Answer: 6.2 × 10-2
  2. 2. Algebra

    Factorise: x² + 18x + 81

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

    Hypotenuse = 36cm, angle = 31°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 30.86cm
  4. 4. Ratio

    Simplify: 9:6:15

    Answer: 3:2:5
  5. 5. Statistics

    Calculate the mean of: 19, 15, 11, 8, 48, 44, 26, 8. Give your answer to 2 decimal places

    Answer: 22.38

Thursday 6 March 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 53,000,000 in standard form

    Answer: 5.3 × 107
  2. 2. Algebra

    Factorise: x² - 2x - 35

    Answer: (x + 5)(x - 7)
  3. 3. Geometry

    Adjacent = 12cm, angle = 43°. Find opposite. Give your answer to 2 decimal places

    Answer: 11.19cm
  4. 4. Ratio

    Black and white sweets are in the ratio 10:9. What fraction of the sweets are black?

    Answer: 10⁄19
  5. 5. Statistics

    Calculate the mean of: 21, 20, 41, 20, 21, 15, 47, 10. Give your answer to 2 decimal places

    Answer: 24.38

Friday 7 March 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.0082 in standard form

    Answer: 8.2 × 10-3
  2. 2. Algebra

    Factorise: x² - 5x - 6

    Answer: (x + 1)(x - 6)
  3. 3. Geometry

    Hypotenuse = 24cm, angle = 35°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 19.66cm
  4. 4. Ratio

    Divide 160 in the ratio 1:1:2

    Answer: 40, 40 and 80
  5. 5. Statistics

    The mean of 4 numbers is 32. If 3 of them are 26, 41, 40, what is the missing number?

    Answer: 21