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Bedrock Feb 19 - 25 25 questions
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Monday 16 February 2026

Keystones #47 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄10 + 6⁄10

    Answer: 4⁄5
  2. 2. Algebra

    Simplify: 9x + 5x

    Answer: 14x
  3. 3. Geometry

    Opposite = 5cm, hypotenuse = 10cm. Find the angle

    Answer: 30° (approximately)
  4. 4. Ratio

    Simplify the ratio 15:10

    Answer: 3:2
  5. 5. Statistics

    Find the mean of: 4, 9, 7, 12, 13

    Answer: 9

Tuesday 17 February 2026

Keystones #48 · Five questions · Open this day only

  1. 1. Number

    Calculate: 43 + 89

    Answer: 43 + 89 = 132
  2. 2. Algebra

    Simplify: 3x + 4x

    Answer: 7x
  3. 3. Geometry

    Opposite = 9cm, hypotenuse = 18cm. Find the angle

    Answer: 30° (approximately)
  4. 4. Ratio

    In ratio 5:2, the difference between shares is 30. What are the shares?

    Answer: 50 and 20
  5. 5. Statistics

    Find the mean of: 9, 12, 18, 17, 18

    Answer: 14.8

Wednesday 18 February 2026

Keystones #49 · Five questions · Open this day only

  1. 1. Number

    List the first 5 multiples of 7

    Answer: 7, 14, 21, 28, 35
  2. 2. Algebra

    Find the next term: 21, 31, 41, 51, ...

    Answer: 61
  3. 3. Geometry

    Opposite = 10cm, hypotenuse = 11.5cm. Find the angle

    Answer: 60° (approximately)
  4. 4. Ratio

    Simplify the ratio 32:24

    Answer: 4:3
  5. 5. Statistics

    What is the probability of getting heads when flipping a fair coin?

    Answer: 1⁄2

Thursday 19 February 2026

Keystones #50 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄7 + 4⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Simplify: 2x + 6x

    Answer: 8x
  3. 3. Geometry

    Opposite = 10cm, hypotenuse = 20cm. Find the angle

    Answer: 30° (approximately)
  4. 4. Ratio

    Simplify the ratio 6:4

    Answer: 3:2
  5. 5. Statistics

    Find the mean of: 18, 18, 15

    Answer: 17

Friday 20 February 2026

Keystones #51 · Five questions · Open this day only

  1. 1. Number

    Calculate: 81 + 44

    Answer: 81 + 44 = 125
  2. 2. Algebra

    Find the next term: 22, 31, 40, 49, ...

    Answer: 58
  3. 3. Geometry

    Opposite = 15cm, hypotenuse = 30cm. Find the angle

    Answer: 30° (approximately)
  4. 4. Ratio

    Simplify the ratio 12:24

    Answer: 1:2
  5. 5. Statistics

    Find the range of: 25, 17, 30, 8, 22

    Answer: 22