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Bedrock May 7 - 13 25 questions
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Monday 4 May 2026

Keystones #124 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1 + (-2)

    Answer: -1
  2. 2. Algebra

    Solve: x + 4 = 18

    Answer: x = 14
  3. 3. Geometry

    Opposite = 11cm, hypotenuse = 12.7cm. Find the angle

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

    Simplify the ratio 12:6

    Answer: 2:1
  5. 5. Statistics

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

    Answer: 1⁄2

Tuesday 5 May 2026

Keystones #125 · Five questions · Open this day only

  1. 1. Number

    Calculate: 79 + 57

    Answer: 79 + 57 = 136
  2. 2. Algebra

    Find the next term: 6, 9, 12, 15, ...

    Answer: 18
  3. 3. Geometry

    Opposite = 12cm, hypotenuse = 13.9cm. Find the angle

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

    Calculate 50% of 119

    Answer: 59.5
  5. 5. Statistics

    Find the mean of: 8, 13, 2

    Answer: 7.6666666666667

Wednesday 6 May 2026

Keystones #126 · Five questions · Open this day only

  1. 1. Number

    Calculate: 47 + 33

    Answer: 47 + 33 = 80
  2. 2. Algebra

    Simplify: 5x + 3x

    Answer: 8x
  3. 3. Geometry

    Opposite = 11cm, hypotenuse = 12.7cm. Find the angle

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

    Simplify the ratio 14:8

    Answer: 7:4
  5. 5. Statistics

    Find the mean of: 13, 12, 17, 20

    Answer: 15.5

Thursday 7 May 2026

Keystones #127 · Five questions · Open this day only

  1. 1. Number

    Calculate: 66 + 47

    Answer: 66 + 47 = 113
  2. 2. Algebra

    Find the midpoint of (4, 6) and (12, 13)

    Answer: (8, 9.5)
  3. 3. Geometry

    Find the area of a right triangle with base 5cm and height 10cm

    Answer: 25cm²
  4. 4. Ratio

    Simplify the ratio 12:9

    Answer: 4:3
  5. 5. Statistics

    Find the mean of: 14, 9, 3

    Answer: 8.6666666666667

Friday 8 May 2026

Keystones #128 · Five questions · Open this day only

  1. 1. Number

    Calculate: 79 + 39

    Answer: 79 + 39 = 118
  2. 2. Algebra

    Simplify: 9x + 4x

    Answer: 13x
  3. 3. Geometry

    Opposite = 14cm, hypotenuse = 19.8cm. Find the angle

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

    Calculate 10% of 81

    Answer: 8.1
  5. 5. Statistics

    Find the median of: 11, 9, 8, 13, 6

    Answer: 9