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Lintel Jan 5 - 11 25 questions
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Monday 5 January 2026

Keystones #5 · Five questions · Open this day only

  1. 1. Number

    Simplify: y4 × (y4)4 ÷ y1

    Answer: y19
  2. 2. Algebra

    Solve: 7x - 8 = 3x + 28

    Answer: x = 9
  3. 3. Geometry

    Find the distance between (-4, -8) and (5, 9)

    Answer: 19.24
  4. 4. Ratio

    A value of 360 increases by 8% each year for 3 years. Final value?

    Answer: 453.5
  5. 5. Statistics

    Find the median of: 50, 48, 51, 28, 23, 60, 56, 70, 59

    Answer: 51

Tuesday 6 January 2026

Keystones #6 · Five questions · Open this day only

  1. 1. Number

    Simplify: (a3)3 × a3

    Answer: a12
  2. 2. Algebra

    Solve: 7x - 6 = 5x + -2

    Answer: x = 2
  3. 3. Geometry

    Calculate the distance between (10, 3) and (13, 7)

    Answer: 5
  4. 4. Ratio

    A value of 333 increases by 9% each year for 3 years. Final value?

    Answer: 431.24
  5. 5. Statistics

    Find the median of: 59, 64, 38, 36, 76, 61, 21, 60, 35, 79, 73

    Answer: 60

Wednesday 7 January 2026

Keystones #7 · Five questions · Open this day only

  1. 1. Number

    Simplify: y3 × (y4)3 ÷ y3

    Answer: y12
  2. 2. Algebra

    Solve: 3x + 8 = 2x - 4

    Answer: x = 12
  3. 3. Geometry

    Find the distance between (-4, -2) and (5, 7)

    Answer: 12.73
  4. 4. Ratio

    A value of 459 increases by 14% each year for 3 years. Final value?

    Answer: 680.03
  5. 5. Statistics

    Calculate the median of: 23, 18, 33, 21, 31, 17

    Answer: 22

Thursday 8 January 2026

Keystones #8 · Five questions · Open this day only

  1. 1. Number

    Simplify: y4 × (y3)3 ÷ y2

    Answer: y11
  2. 2. Algebra

    Solve: 4x + 11 = 2x - 5

    Answer: x = 8
  3. 3. Geometry

    Find the distance between (-8, -1) and (9, 4)

    Answer: 17.72
  4. 4. Ratio

    A value of 225 increases by 7% each year for 3 years. Final value?

    Answer: 275.63
  5. 5. Statistics

    Calculate the median of: 28, 10, 28, 23, 11, 30

    Answer: 25.5

Friday 9 January 2026

Keystones #9 · Five questions · Open this day only

  1. 1. Number

    Simplify: (a2)3 × a2

    Answer: a8
  2. 2. Algebra

    Solve: 5x - 3 = 3x + 3

    Answer: x = 3
  3. 3. Geometry

    Calculate the distance between (2, 10) and (5, 14)

    Answer: 5
  4. 4. Ratio

    A value of 409 increases by 13% each year for 3 years. Final value?

    Answer: 590.14
  5. 5. Statistics

    Find the median of: 22, 43, 61, 58, 20, 72, 37, 61, 23

    Answer: 43