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Lintel Sep 8 - 14 25 questions
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Monday 8 September 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    16000000

    Answer: 1.6 × 107
  2. 2. Algebra

    Factorise: x² - 10x + 21

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

    Adjacent = 12cm, angle = 58°. Find opposite

    Answer: 19.2cm
  4. 4. Ratio

    £168.00 is shared between A and B in the ratio 1:2. How much does A receive?

    Answer: £56.00
  5. 5. Statistics

    Calculate the mean of: 38, 14, 18, 33, 46, 9, 20

    Answer: 25.4

Tuesday 9 September 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.079

    Answer: 7.9 × 10-2
  2. 2. Algebra

    Factorise: x² + x - 2

    Answer: (x + 2)(x - 1)
  3. 3. Geometry

    Hypotenuse = 35cm, angle = 61°. Find adjacent side

    Answer: 17cm
  4. 4. Ratio

    £272.00 is shared between A and B in the ratio 3:5. How much does A receive?

    Answer: £102.00
  5. 5. Statistics

    The mean of 6 numbers is 30. If 5 of them are 35, 40, 25, 40, 48, what is the missing number?

    Answer: -8

Wednesday 10 September 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00011

    Answer: 1.1 × 10-4
  2. 2. Algebra

    Factorise: x² + 2x - 24

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

    Adjacent = 22cm, angle = 39°. Find opposite

    Answer: 17.8cm
  4. 4. Ratio

    In ratio 3:3:2, what fraction is the second part?

    Answer: 38
  5. 5. Statistics

    The mean of 6 numbers is 35. If 5 of them are 15, 43, 40, 31, 30, what is the missing number?

    Answer: 51

Thursday 11 September 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    5000000

    Answer: 5 × 106
  2. 2. Algebra

    Factorise: x² - 8x + 16

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

    Hypotenuse = 17cm, angle = 60°. Find adjacent side

    Answer: 8.5cm
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 41, 38, 26, 49, 44, 26, 38

    Answer: 37.4

Friday 12 September 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.017

    Answer: 1.7 × 10-2
  2. 2. Algebra

    Factorise: x² - 10x + 24

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

    Adjacent = 10cm, angle = 44°. Find opposite

    Answer: 9.7cm
  4. 4. Ratio

    In ratio 2:4:1, what fraction is the second part?

    Answer: 47
  5. 5. Statistics

    Calculate the mean of: 39, 36, 41, 11, 13, 28, 22, 28

    Answer: 27.3