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Lintel Feb 3 - 9 25 questions
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Monday 3 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0034

    Answer: 3.4 × 10-3
  2. 2. Algebra

    Factorise: x² + 2x - 24

    Answer: (x + 6)(x - 4)
  3. 3. Geometry

    Adjacent = 25cm, angle = 36°. Find opposite

    Answer: 18.2cm
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 23, 7, 30, 44, 20, 22, 6

    Answer: 21.7

Tuesday 4 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.012

    Answer: 1.2 × 10-2
  2. 2. Algebra

    Factorise: x² + x - 6

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

    Adjacent = 21cm, angle = 30°. Find opposite

    Answer: 12.cm
  4. 4. Ratio

    Express the first part of 3:4 as a fraction in simplest form

    Answer: 3⁄7
  5. 5. Statistics

    The mean of 5 numbers is 29. If 4 of them are 31, 42, 16, 17, what is the missing number?

    Answer: 39

Wednesday 5 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    310000

    Answer: 3.1 × 105
  2. 2. Algebra

    Factorise: x² - 9x + 14

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

    Hypotenuse = 35cm, angle = 33°. Find adjacent side

    Answer: 29.4cm
  4. 4. Ratio

    Divide 154 in the ratio 3:3:1

    Answer: 66, 66 and 22
  5. 5. Statistics

    Calculate the mean of: 26, 39, 42, 17, 16, 49, 16, 26

    Answer: 28.9

Thursday 6 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0043

    Answer: 4.3 × 10-3
  2. 2. Algebra

    Factorise: x² - 9x + 18

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

    Adjacent = 29cm, angle = 36°. Find opposite

    Answer: 21.cm
  4. 4. Ratio

    Express the first part of 2:6 as a fraction in simplest form

    Answer: 1⁄4
  5. 5. Statistics

    Calculate the mean of: 10, 50, 30, 24, 16, 37, 28

    Answer: 27.9

Friday 7 February 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    680000

    Answer: 6.8 × 105
  2. 2. Algebra

    Factorise: x² - 12x + 35

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

    Hypotenuse = 16cm, angle = 46°. Find adjacent side

    Answer: 11.cm
  4. 4. Ratio

    Divide 102 in the ratio 1:2:3

    Answer: 17, 34 and 51
  5. 5. Statistics

    The mean of 5 numbers is 25. If 4 of them are 46, 27, 27, 31, what is the missing number?

    Answer: -6