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Lintel Jul 21 - 27 25 questions
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Monday 21 July 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.056

    Answer: 5.6 × 10-2
  2. 2. Algebra

    Factorise: x² - 14x + 49

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

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

    Answer: 21.9cm
  4. 4. Ratio

    £100.00 is shared between A and B in the ratio 2:3. How much does A receive?

    Answer: £40.00
  5. 5. Statistics

    The mean of 6 numbers is 26. If 5 of them are 36, 23, 16, 28, 41, what is the missing number?

    Answer: 12

Tuesday 22 July 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    9800000

    Answer: 9.8 × 106
  2. 2. Algebra

    Factorise: x² - 4x + 4

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

    Adjacent = 28cm, angle = 43°. Find opposite

    Answer: 26.cm
  4. 4. Ratio

    In ratio 4:2:3, what fraction is the second part?

    Answer: 29
  5. 5. Statistics

    The mean of 5 numbers is 38. If 4 of them are 26, 20, 37, 16, what is the missing number?

    Answer: 91

Wednesday 23 July 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0046

    Answer: 4.6 × 10-3
  2. 2. Algebra

    Factorise: x² + x - 56

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

    Hypotenuse = 32cm, angle = 43°. Find adjacent side

    Answer: 23.4cm
  4. 4. Ratio

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

    Answer: 47
  5. 5. Statistics

    Calculate the mean of: 37, 15, 18, 24, 27, 20, 32

    Answer: 24.7

Thursday 24 July 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.008

    Answer: 8 × 10-3
  2. 2. Algebra

    Factorise: x² + x - 30

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

    Hypotenuse = 28cm, angle = 30°. Find adjacent side

    Answer: 24.2cm
  4. 4. Ratio

    Divide 104 in the ratio 1:2:1

    Answer: 26, 52 and 26
  5. 5. Statistics

    The mean of 6 numbers is 40. If 5 of them are 18, 24, 22, 42, 48, what is the missing number?

    Answer: 86

Friday 25 July 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    4200000

    Answer: 4.2 × 106
  2. 2. Algebra

    Factorise: x² + x - 2

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

    Adjacent = 13cm, angle = 43°. Find opposite

    Answer: 12.cm
  4. 4. Ratio

    Divide 189 in the ratio 2:3:4

    Answer: 42, 63 and 84
  5. 5. Statistics

    Calculate the mean of: 23, 31, 7, 38, 10, 28, 26

    Answer: 23.3