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Bedrock Jan 12 - 18 25 questions
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Monday 12 January 2026

Keystones #12 · Five questions · Open this day only

  1. 1. Number

    Simplify: 10⁄4

    Answer: 5⁄2
  2. 2. Algebra

    Find the next term: 30, 35, 40, 45, ...

    Answer: 50
  3. 3. Geometry

    What is the sum of interior angles in a triangle?

    Answer: 180°
  4. 4. Ratio

    Share 33 in the ratio 1:2

    Answer: 11 and 22
  5. 5. Statistics

    Find the median of: 6, 11, 20, 19, 5

    Answer: 11

Tuesday 13 January 2026

Keystones #13 · Five questions · Open this day only

  1. 1. Number

    Simplify: 24⁄24

    Answer: 8⁄8
  2. 2. Algebra

    Find the next term: 9, 12, 15, 18, ...

    Answer: 21
  3. 3. Geometry

    What is the sum of interior angles in a quadrilateral?

    Answer: 360°
  4. 4. Ratio

    Share 45 in the ratio 4:1

    Answer: 36 and 9
  5. 5. Statistics

    Find the median of: 11, 15, 11, 16, 8

    Answer: 11

Wednesday 14 January 2026

Keystones #14 · Five questions · Open this day only

  1. 1. Number

    Simplify: 12⁄8

    Answer: 3⁄2
  2. 2. Algebra

    Find the next term: 14, 24, 34, 44, ...

    Answer: 54
  3. 3. Geometry

    What is the sum of interior angles in a hexagon?

    Answer: 720°
  4. 4. Ratio

    Share 112 in the ratio 4:3

    Answer: 64 and 48
  5. 5. Statistics

    Find the median of: 16, 6, 15, 9, 19

    Answer: 15

Thursday 15 January 2026

Keystones #15 · Five questions · Open this day only

  1. 1. Number

    Simplify: 8⁄24

    Answer: 2⁄6
  2. 2. Algebra

    Find the next term: 15, 22, 29, 36, ...

    Answer: 43
  3. 3. Geometry

    Calculate one exterior angle of a regular 8-sided polygon

    Answer: 45°
  4. 4. Ratio

    Share 75 in the ratio 1:4

    Answer: 15 and 60
  5. 5. Statistics

    Find the median of: 9, 9, 16, 10, 20

    Answer: 10

Friday 16 January 2026

Keystones #16 · Five questions · Open this day only

  1. 1. Number

    Simplify: 24⁄20

    Answer: 6⁄5
  2. 2. Algebra

    Find the next term: 20, 26, 32, 38, ...

    Answer: 44
  3. 3. Geometry

    A polygon has interior angles summing to 1440°. How many sides?

    Answer: 10
  4. 4. Ratio

    Share 91 in the ratio 4:3

    Answer: 52 and 39
  5. 5. Statistics

    Find the median of: 6, 5, 6, 7, 10

    Answer: 6