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Capstone Oct 27 - Nov 2 25 questions
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Monday 27 October 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √162

    Answer: 9√2
  2. 2. Algebra

    Complete the square: x² + 2x

    Answer: (x + 1)² - 1
  3. 3. Geometry

    Find area of triangle: a = 23cm, b = 12cm, angle = 59°

    Answer: 118.3cm²
  4. 4. Ratio

    a:b is 2:1 and b:c is 4:5. Find a:b:c.

    Answer: 8:4:5
  5. 5. Statistics

    Find the mean, median and range of: 31, 18, 74, 81, 97, 23, 36, 71

    Answer: Mean = 53.9, Median = 71, Range = 79

Tuesday 28 October 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √108

    Answer: 6√3
  2. 2. Algebra

    Complete the square: x² + 4.2x

    Answer: (x + 2.1)² - 4.41
  3. 3. Geometry

    Find area of triangle: a = 28cm, b = 19cm, angle = 59°

    Answer: 228cm²
  4. 4. Ratio

    a:b is 2:1 and b:c is 4:3. Find a:b:c.

    Answer: 8:4:3
  5. 5. Statistics

    Find the mean, median and range of: 44, 80, 59, 68, 11, 21, 63, 41, 14

    Answer: Mean = 44.6, Median = 44, Range = 69

Wednesday 29 October 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √192

    Answer: 8√3
  2. 2. Algebra

    Complete the square: x² + 3.2x

    Answer: (x + 1.6)² - 2.56
  3. 3. Geometry

    Find area of triangle: a = 28cm, b = 22cm, angle = 58°

    Answer: 261.2cm²
  4. 4. Ratio

    a:b is 4:3 and b:c is 1:2. Find a:b:c.

    Answer: 4:3:6
  5. 5. Statistics

    Find the mean, median and range of: 56, 91, 41, 59, 93, 40, 30, 94

    Answer: Mean = 63, Median = 59, Range = 64

Thursday 30 October 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √243

    Answer: 9√3
  2. 2. Algebra

    Complete the square: x² + 2.2x

    Answer: (x + 1.1)² - 1.21
  3. 3. Geometry

    Find area of triangle: a = 27cm, b = 13cm, angle = 72°

    Answer: 166.9cm²
  4. 4. Ratio

    a:b is 1:2 and b:c is 2:3. Find a:b:c.

    Answer: 2:4:6
  5. 5. Statistics

    Find the mean, median and range of: 97, 78, 48, 17, 84, 34, 45, 55, 31

    Answer: Mean = 54.3, Median = 48, Range = 80

Friday 31 October 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: √98

    Answer: 7√2
  2. 2. Algebra

    Complete the square: x² + 2.8x

    Answer: (x + 1.4)² - 1.96
  3. 3. Geometry

    Find area of triangle: a = 29cm, b = 23cm, angle = 76°

    Answer: 323.6cm²
  4. 4. Ratio

    a:b is 2:1 and b:c is 2:3. Find a:b:c.

    Answer: 8:4:6
  5. 5. Statistics

    Find the mean, median and range of: 88, 20, 65, 56, 95, 98, 67, 47, 43

    Answer: Mean = 64.3, Median = 65, Range = 78