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Lintel Aug 7 - 13 25 questions
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Monday 7 August 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 440,000 in standard form

    Answer: 4.4 × 105
  2. 2. Algebra

    Factorise: x² + 10x - 11

    Answer: (x + 11)(x - 1)
  3. 3. Geometry

    Hypotenuse = 35cm, angle = 60°. Find adjacent side

    Answer: 17.5cm
  4. 4. Ratio

    Simplify: 12:12:6

    Answer: 2:2:1
  5. 5. Statistics

    The mean of 4 numbers is 38. If 3 of them are 46, 44, 46, what is the missing number?

    Answer: 16

Tuesday 8 August 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 80,000 in standard form

    Answer: 8 × 104
  2. 2. Algebra

    Factorise: x² - 13x + 30

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

    Hypotenuse = 39cm, angle = 58°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 20.67cm
  4. 4. Ratio

    Simplify: 12:6:6

    Answer: 2:1:1
  5. 5. Statistics

    The mean of 4 numbers is 22. If 3 of them are 20, 21, 21, what is the missing number?

    Answer: 26

Wednesday 9 August 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.068 in standard form

    Answer: 6.8 × 10-2
  2. 2. Algebra

    Factorise: x² - 2x - 48

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

    Adjacent = 14cm, angle = 48°. Find opposite. Give your answer to 2 decimal places

    Answer: 15.55cm
  4. 4. Ratio

    Red and blue marbles are in the ratio 14:4. What fraction of the marbles are red?

    Answer: 7⁄9
  5. 5. Statistics

    Calculate the mean of: 47, 26, 42, 10, 9, 29. Give your answer to 2 decimal places

    Answer: 27.17

Thursday 10 August 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000078 in standard form

    Answer: 7.8 × 10-5
  2. 2. Algebra

    Factorise: x² + 8x - 20

    Answer: (x + 10)(x - 2)
  3. 3. Geometry

    Hypotenuse = 31cm, angle = 28°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 27.37cm
  4. 4. Ratio

    Red and blue marbles are in the ratio 2:9. What fraction of the marbles are blue?

    Answer: 9⁄11
  5. 5. Statistics

    Calculate the mean of: 46, 48, 50, 44, 29, 49. Give your answer to 2 decimal places

    Answer: 44.33

Friday 11 August 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 980,000 in standard form

    Answer: 9.8 × 105
  2. 2. Algebra

    Factorise: x² + 10x + 9

    Answer: (x + 9)(x + 1)
  3. 3. Geometry

    Adjacent = 13cm, angle = 46°. Find opposite. Give your answer to 2 decimal places

    Answer: 13.46cm
  4. 4. Ratio

    Express the first part of 12:11 as a fraction in simplest form

    Answer: 12⁄23
  5. 5. Statistics

    The mean of 6 numbers is 40. If 5 of them are 40, 39, 33, 49, 29, what is the missing number?

    Answer: 50