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Bedrock Mar 12 - 18 25 questions
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Monday 16 March 2026

Keystones #75 · Five questions · Open this day only

  1. 1. Number

    Calculate: 17 + 25

    Answer: 17 + 25 = 42
  2. 2. Algebra

    Solve: x + 15 = 31

    Answer: x = 16
  3. 3. Geometry

    Opposite = 6cm, hypotenuse = 8.5cm. Find the angle

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

    Simplify the ratio 8:12

    Answer: 2:3
  5. 5. Statistics

    Find the mean of: 11, 20, 3, 9

    Answer: 10.75

Tuesday 17 March 2026

Keystones #76 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Factorise: 42x + 24

    Answer: 6(7x + 4)
  3. 3. Geometry

    Opposite = 6cm, hypotenuse = 12cm. Find the angle

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

    Calculate 50% of 193

    Answer: 96.5
  5. 5. Statistics

    What is the probability of rolling a 6 on a fair die?

    Answer: 1⁄6

Wednesday 18 March 2026

Keystones #77 · Five questions · Open this day only

  1. 1. Number

    Calculate: 94 + 73

    Answer: 94 + 73 = 167
  2. 2. Algebra

    Simplify: 4x + 8x

    Answer: 12x
  3. 3. Geometry

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

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

    Simplify the ratio 10:8

    Answer: 5:4
  5. 5. Statistics

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

    Answer: 1⁄2

Thursday 19 March 2026

Keystones #78 · Five questions · Open this day only

  1. 1. Number

    Calculate: 45 + 41

    Answer: 45 + 41 = 86
  2. 2. Algebra

    Find the next term: 8, 18, 28, 38, ...

    Answer: 48
  3. 3. Geometry

    Find the area of a circle with radius 10cm

    Answer: 314.16cm²
  4. 4. Ratio

    Simplify the ratio 8:6

    Answer: 4:3
  5. 5. Statistics

    Find the mean of: 16, 20, 2, 11, 11

    Answer: 12

Friday 20 March 2026

Keystones #79 · Five questions · Open this day only

  1. 1. Number

    Simplify: 84 × 82

    Answer: 86
  2. 2. Algebra

    Factorise: 8x + 12

    Answer: 2(4x + 6)
  3. 3. Geometry

    Find the area of a circle with radius 5cm

    Answer: 78.54cm²
  4. 4. Ratio

    Simplify the ratio 4:10

    Answer: 2:5
  5. 5. Statistics

    Find the mean of: 13, 18, 16, 14, 7

    Answer: 13.6