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Bedrock May 14 - 20 25 questions
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Monday 11 May 2026

Keystones #131 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄9 + 2⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Find the next term: 15, 23, 31, 39, ...

    Answer: 47
  3. 3. Geometry

    Opposite = 5cm, hypotenuse = 5.8cm. Find the angle

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

    Simplify the ratio 8:16

    Answer: 1:2
  5. 5. Statistics

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

    Answer: 1⁄2

Tuesday 12 May 2026

Keystones #132 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄12 + 1⁄12

    Answer: 1⁄6
  2. 2. Algebra

    Simplify: 5x + 5x

    Answer: 10x
  3. 3. Geometry

    Opposite = 8cm, hypotenuse = 16cm. Find the angle

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

    Calculate 10% of 98

    Answer: 9.8
  5. 5. Statistics

    Find the mean of: 2, 9, 19, 9

    Answer: 9.75

Wednesday 13 May 2026

Keystones #133 · Five questions · Open this day only

  1. 1. Number

    Calculate: 33 + 70

    Answer: 33 + 70 = 103
  2. 2. Algebra

    Factorise: 36x + 12

    Answer: 6(6x + 2)
  3. 3. Geometry

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

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

    Simplify the ratio 12:32

    Answer: 3:8
  5. 5. Statistics

    Find the mean of: 7, 4, 2

    Answer: 4.3333333333333

Thursday 14 May 2026

Keystones #134 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7 + (-8)

    Answer: -1
  2. 2. Algebra

    Simplify: 7x + 3x

    Answer: 10x
  3. 3. Geometry

    Opposite = 5cm, hypotenuse = 7.cm. Find the angle

    Answer: 45° (approximately)
  4. 4. Ratio

    Simplify the ratio 15:6

    Answer: 5:2
  5. 5. Statistics

    Find the mean of: 6, 5, 5

    Answer: 5.3333333333333

Friday 15 May 2026

Keystones #135 · Five questions · Open this day only

  1. 1. Number

    Calculate: 37 + 43

    Answer: 37 + 43 = 80
  2. 2. Algebra

    Simplify: 4x + 2x

    Answer: 6x
  3. 3. Geometry

    Opposite = 8cm, hypotenuse = 16cm. Find the angle

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

    Simplify the ratio 21:12

    Answer: 7:4
  5. 5. Statistics

    Find the mean of: 20, 16, 13, 13

    Answer: 15.5