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Lintel May 23 - 29 25 questions
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Monday 23 May 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 310,000 in standard form

    Answer: 3.1 × 105
  2. 2. Algebra

    Factorise: x² - 5x - 14

    Answer: (x + 2)(x - 7)
  3. 3. Geometry

    Hypotenuse = 32cm, angle = 31°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 27.43cm
  4. 4. Ratio

    Simplify the ratio 4 hours : 40 minutes

    Answer: 6:1
  5. 5. Statistics

    The mean of 5 numbers is 38. If 4 of them are 40, 44, 22, 25, what is the missing number?

    Answer: 59

Tuesday 24 May 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 130,000,000 in standard form

    Answer: 1.3 × 108
  2. 2. Algebra

    Factorise: x² - 4x - 45

    Answer: (x + 5)(x - 9)
  3. 3. Geometry

    Hypotenuse = 30cm, angle = 55°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 17.21cm
  4. 4. Ratio

    Divide 153 in the ratio 2:4:3

    Answer: 34, 68 and 51
  5. 5. Statistics

    Calculate the mean of: 17, 24, 27, 30, 32, 23, 49, 36

    Answer: 29.75

Wednesday 25 May 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00021 in standard form

    Answer: 2.1 × 10-4
  2. 2. Algebra

    Factorise: x² + 9x + 14

    Answer: (x + 7)(x + 2)
  3. 3. Geometry

    Adjacent = 19cm, angle = 32°. Find opposite. Give your answer to 2 decimal places

    Answer: 11.87cm
  4. 4. Ratio

    Divide 50 in the ratio 3:1:1

    Answer: 30, 10 and 10
  5. 5. Statistics

    The mean of 4 numbers is 25. If 3 of them are 16, 35, 25, what is the missing number?

    Answer: 24

Thursday 26 May 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 200,000,000 in standard form

    Answer: 2 × 108
  2. 2. Algebra

    Factorise: x² - 6x - 7

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

    Hypotenuse = 34cm, angle = 29°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 29.74cm
  4. 4. Ratio

    Divide 91 in the ratio 4:2:1

    Answer: 52, 26 and 13
  5. 5. Statistics

    The mean of 4 numbers is 20. If 3 of them are 22, 24, 26, what is the missing number?

    Answer: 8

Friday 27 May 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00035 in standard form

    Answer: 3.5 × 10-4
  2. 2. Algebra

    Factorise: x² + 4x - 5

    Answer: (x + 5)(x - 1)
  3. 3. Geometry

    Adjacent = 22cm, angle = 38°. Find opposite. Give your answer to 2 decimal places

    Answer: 17.19cm
  4. 4. Ratio

    Divide 80 in the ratio 1:3:1

    Answer: 16, 48 and 16
  5. 5. Statistics

    Calculate the mean of: 11, 36, 23, 31, 40, 31, 37, 33

    Answer: 30.25