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Bedrock May 28 - Jun 3 25 questions
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Monday 25 May 2026

Keystones #145 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6 + 3 × 3

    Answer: 15
  2. 2. Algebra

    Simplify: 3x + 8x

    Answer: 11x
  3. 3. Geometry

    Opposite = 13cm, hypotenuse = 26cm. Find the angle

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

    Simplify the ratio 6:21

    Answer: 2:7
  5. 5. Statistics

    Find the mean of: 8, 20, 18

    Answer: 15.333333333333

Tuesday 26 May 2026

Keystones #146 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Find the next term: 15, 20, 25, 30, ...

    Answer: 35
  3. 3. Geometry

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

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

    Calculate 50% of 67

    Answer: 33.5
  5. 5. Statistics

    Find the range of: 20, 15, 30, 17, 16

    Answer: 15

Wednesday 27 May 2026

Keystones #147 · Five questions · Open this day only

  1. 1. Number

    Calculate: 36 + 12

    Answer: 36 + 12 = 48
  2. 2. Algebra

    Simplify: 4x + 9x

    Answer: 13x
  3. 3. Geometry

    Find the area of a circle with radius 10cm

    Answer: 314.16cm²
  4. 4. Ratio

    Simplify the ratio 14:10

    Answer: 7:5
  5. 5. Statistics

    Find the mean of: 10, 2, 12, 8, 12

    Answer: 8.8

Thursday 28 May 2026

Keystones #148 · Five questions · Open this day only

  1. 1. Number

    Simplify: 53 × 55

    Answer: 58
  2. 2. Algebra

    Solve: x + 2 = 13

    Answer: x = 11
  3. 3. Geometry

    Opposite = 14cm, hypotenuse = 16.2cm. Find the angle

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

    Simplify the ratio 32:12

    Answer: 8:3
  5. 5. Statistics

    Find the mean of: 4, 2, 18, 9, 3

    Answer: 7.2

Friday 29 May 2026

Keystones #149 · Five questions · Open this day only

  1. 1. Number

    Simplify: 93 × 93

    Answer: 96
  2. 2. Algebra

    Simplify: 7x + 9x

    Answer: 16x
  3. 3. Geometry

    Opposite = 10cm, hypotenuse = 14.cm. Find the angle

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

    Simplify the ratio 12:21

    Answer: 4:7
  5. 5. Statistics

    Find the mean of: 13, 4, 7, 8, 10

    Answer: 8.4