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Lintel Jul 20 - 26 25 questions
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Monday 20 July 2026

Keystones #201 · Five questions · Open this day only

  1. 1. Number

    Simplify: y3 × (y2)3 ÷ y1

    Answer: y8
  2. 2. Algebra

    Solve: 3x + 9 = 2x - 3

    Answer: x = 12
  3. 3. Geometry

    Find the distance between (2, 2) and (7, 5)

    Answer: 5.83
  4. 4. Ratio

    A value of 289 increases by 14% each year for 3 years. Final value?

    Answer: 428.17
  5. 5. Statistics

    Find the median of: 37, 71, 60, 33, 63, 60, 69, 60, 41, 76, 43

    Answer: 60

Tuesday 21 July 2026

Keystones #202 · Five questions · Open this day only

  1. 1. Number

    Simplify: (a2)4 × a2

    Answer: a10
  2. 2. Algebra

    Solve: 5x - 10 = 3x + 4

    Answer: x = 7
  3. 3. Geometry

    Calculate the distance between (6, 8) and (9, 12)

    Answer: 5
  4. 4. Ratio

    A value of 204 increases by 9% each year for 3 years. Final value?

    Answer: 264.19
  5. 5. Statistics

    Calculate the median of: 17, 15, 12, 17, 14, 26

    Answer: 16

Wednesday 22 July 2026

Keystones #203 · Five questions · Open this day only

  1. 1. Number

    Simplify: y4 × (y3)3 ÷ y1

    Answer: y12
  2. 2. Algebra

    Solve: 6x - 9 = 2x + -1

    Answer: x = 2
  3. 3. Geometry

    Find the distance between (-2, -3) and (6, 10)

    Answer: 15.26
  4. 4. Ratio

    A value of 249 increases by 12% each year for 3 years. Final value?

    Answer: 349.83
  5. 5. Statistics

    Calculate the median of: 28, 36, 14, 27, 20, 13

    Answer: 23.5

Thursday 23 July 2026

Keystones #204 · Five questions · Open this day only

  1. 1. Number

    Simplify: y4 × (y4)4 ÷ y2

    Answer: y18
  2. 2. Algebra

    Solve: 8x + 7 = 7x - 7

    Answer: x = 14
  3. 3. Geometry

    Calculate the distance between (7, 2) and (10, 6)

    Answer: 5
  4. 4. Ratio

    A value of 410 increases by 11% each year for 3 years. Final value?

    Answer: 560.73
  5. 5. Statistics

    Find the median of: 75, 61, 69, 66, 56, 77, 79, 61, 33

    Answer: 66

Friday 24 July 2026

Keystones #205 · Five questions · Open this day only

  1. 1. Number

    Simplify: (a2)4 × a3

    Answer: a11
  2. 2. Algebra

    Solve: 5x + 5 = 2x - 4

    Answer: x = 3
  3. 3. Geometry

    Calculate the distance between (4, 10) and (7, 14)

    Answer: 5
  4. 4. Ratio

    A car worth £19,711.00 depreciates by 11% each year for 3 years. What is it worth after 3 years?

    Answer: £13,895.64
  5. 5. Statistics

    Calculate the median of: 10, 13, 34, 19, 27, 18

    Answer: 18.5