Change pack
Lintel Sep 15 - 21 25 questions
PDF (questions) PDF (answers)

Monday 15 September 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.092

    Answer: 9.2 × 10-2
  2. 2. Algebra

    Factorise: x² - 8x + 15

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

    Adjacent = 24cm, angle = 42°. Find opposite

    Answer: 21.6cm
  4. 4. Ratio

    Simplify: 8:20:16

    Answer: 2:5:4
  5. 5. Statistics

    The mean of 4 numbers is 37. If 3 of them are 37, 16, 21, what is the missing number?

    Answer: 74

Tuesday 16 September 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    46000

    Answer: 4.6 × 104
  2. 2. Algebra

    Factorise: x² - 9x + 20

    Answer: (x - 5)(x - 4)
  3. 3. Geometry

    Hypotenuse = 28cm, angle = 47°. Find adjacent side

    Answer: 19.cm
  4. 4. Ratio

    Divide 216 in the ratio 3:4:1

    Answer: 81, 108 and 27
  5. 5. Statistics

    The mean of 4 numbers is 39. If 3 of them are 30, 27, 50, what is the missing number?

    Answer: 49

Wednesday 17 September 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00087

    Answer: 8.7 × 10-4
  2. 2. Algebra

    Factorise: x² + 6x - 16

    Answer: (x + 8)(x - 2)
  3. 3. Geometry

    Adjacent = 27cm, angle = 35°. Find opposite

    Answer: 18.9cm
  4. 4. Ratio

    Simplify: 6:10:8

    Answer: 3:5:4
  5. 5. Statistics

    Calculate the mean of: 11, 17, 21, 19, 25, 5

    Answer: 16.3

Thursday 18 September 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.029

    Answer: 2.9 × 10-2
  2. 2. Algebra

    Factorise: x² + x - 56

    Answer: (x + 8)(x - 7)
  3. 3. Geometry

    Adjacent = 18cm, angle = 42°. Find opposite

    Answer: 16.2cm
  4. 4. Ratio

    Simplify: 6:9:18

    Answer: 2:3:6
  5. 5. Statistics

    Calculate the mean of: 13, 29, 42, 47, 15, 32, 18

    Answer: 28

Friday 19 September 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    530000

    Answer: 5.3 × 105
  2. 2. Algebra

    Factorise: x² - 7x + 12

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

    Hypotenuse = 30cm, angle = 43°. Find adjacent side

    Answer: 21.9cm
  4. 4. Ratio

    Express the first part of 5:6 as a fraction in simplest form

    Answer: 511
  5. 5. Statistics

    The mean of 6 numbers is 37. If 5 of them are 32, 47, 48, 49, 19, what is the missing number?

    Answer: 27