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Lintel Apr 14 - 20 25 questions
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Monday 14 April 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00024

    Answer: 2.4 × 10-4
  2. 2. Algebra

    Factorise: x² - 7x + 12

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

    Adjacent = 15cm, angle = 37°. Find opposite

    Answer: 11.3cm
  4. 4. Ratio

    Express the first part of 3:6 as a fraction in simplest form

    Answer: 13
  5. 5. Statistics

    Calculate the mean of: 35, 33, 6, 15, 37, 39, 34, 24

    Answer: 27.9

Tuesday 15 April 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    55000

    Answer: 5.5 × 104
  2. 2. Algebra

    Factorise: x² + 2x - 48

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

    Hypotenuse = 37cm, angle = 62°. Find adjacent side

    Answer: 17.4cm
  4. 4. Ratio

    Simplify: 15:9:9

    Answer: 5:3:3
  5. 5. Statistics

    The mean of 4 numbers is 37. If 3 of them are 30, 40, 42, what is the missing number?

    Answer: 36

Wednesday 16 April 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0023

    Answer: 2.3 × 10-3
  2. 2. Algebra

    Factorise: x² + 5x - 14

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

    Adjacent = 18cm, angle = 37°. Find opposite

    Answer: 13.6cm
  4. 4. Ratio

    Simplify: 6:18:15

    Answer: 2:6:5
  5. 5. Statistics

    The mean of 5 numbers is 30. If 4 of them are 21, 26, 50, 45, what is the missing number?

    Answer: 8

Thursday 17 April 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    490000

    Answer: 4.9 × 105
  2. 2. Algebra

    Factorise: x² + x - 2

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

    Hypotenuse = 30cm, angle = 25°. Find adjacent side

    Answer: 27.2cm
  4. 4. Ratio

    Simplify: 10:8:10

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

    Calculate the mean of: 13, 30, 14, 5, 37, 47

    Answer: 24.3

Friday 18 April 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    83000

    Answer: 8.3 × 104
  2. 2. Algebra

    Factorise: x² - 9x + 18

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

    Hypotenuse = 31cm, angle = 46°. Find adjacent side

    Answer: 21.5cm
  4. 4. Ratio

    Simplify: 15:9:18

    Answer: 5:3:6
  5. 5. Statistics

    Calculate the mean of: 23, 21, 50, 34, 21, 37, 36

    Answer: 31.7