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Lintel Oct 30 - Nov 5 25 questions
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Monday 30 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.00072 in standard form

    Answer: 7.2 × 10-4
  2. 2. Algebra

    Factorise: x² - 18x + 80

    Answer: (x - 8)(x - 10)
  3. 3. Geometry

    Adjacent = 30cm, angle = 50°. Find opposite. Give your answer to 2 decimal places

    Answer: 35.75cm
  4. 4. Ratio

    Divide 290 in the ratio 3:3:4

    Answer: 87, 87 and 116
  5. 5. Statistics

    Calculate the mean of: 18, 34, 11, 44, 50, 47, 41, 12. Give your answer to 2 decimal places

    Answer: 32.13

Tuesday 31 October 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    72000000

    Answer: 7.2 × 107
  2. 2. Algebra

    Factorise: x² + 2x - 35

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

    Hypotenuse = 26cm, angle = 59°. Find adjacent side

    Answer: 13.4cm
  4. 4. Ratio

    Express the first part of 5:3 as a fraction in simplest form

    Answer: 5⁄8
  5. 5. Statistics

    The mean of 5 numbers is 34. If 4 of them are 21, 15, 46, 25, what is the missing number?

    Answer: 63

Wednesday 1 November 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 46,000,000 in standard form

    Answer: 4.6 × 107
  2. 2. Algebra

    Factorise: x² + x - 30

    Answer: (x + 6)(x - 5)
  3. 3. Geometry

    Hypotenuse = 38cm, angle = 51°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 23.91cm
  4. 4. Ratio

    Simplify: 20:16:16

    Answer: 5:4:4
  5. 5. Statistics

    Calculate the mean of: 36, 17, 7, 37, 21, 15. Give your answer to 2 decimal places

    Answer: 22.17

Thursday 2 November 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 0.000063 in standard form

    Answer: 6.3 × 10-5
  2. 2. Algebra

    Factorise: x² - 2x - 3

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

    Adjacent = 19cm, angle = 50°. Find opposite. Give your answer to 2 decimal places

    Answer: 22.64cm
  4. 4. Ratio

    Divide 168 in the ratio 2:3:2

    Answer: 48, 72 and 48
  5. 5. Statistics

    Calculate the mean of: 10, 6, 20, 39, 6, 42, 42, 34. Give your answer to 2 decimal places

    Answer: 24.88

Friday 3 November 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Write 5,500,000 in standard form

    Answer: 5.5 × 106
  2. 2. Algebra

    Factorise: x² + 6x - 55

    Answer: (x + 11)(x - 5)
  3. 3. Geometry

    Hypotenuse = 39cm, angle = 50°. Find adjacent side. Give your answer to 2 decimal places

    Answer: 25.07cm
  4. 4. Ratio

    Simplify: 12:10:8

    Answer: 6:5:4
  5. 5. Statistics

    The mean of 6 numbers is 30. If 5 of them are 31, 25, 19, 31, 43, what is the missing number?

    Answer: 31