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Capstone Oct 5 - 11 25 questions
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Monday 5 October 2026

Keystones #278 · Five questions · Open this day only

  1. 1. Number

    Simplify: 5√2 - 3√2

    Answer: 2√2
  2. 2. Algebra

    Find equation with turning point (1, 2) and coefficient 3

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

    Find perimeter: adjacent = 14cm, angle = 41°

    Answer: 44.8cm
  4. 4. Ratio

    53 out of 100 students passed. What percentage passed?

    Answer: 53%
  5. 5. Statistics

    A spinner has 3 red, 3 blue and 4 green sections. Probability of landing on red?

    Answer: 3⁄10

Tuesday 6 October 2026

Keystones #279 · Five questions · Open this day only

  1. 1. Number

    Simplify: 8√5 - 3√5

    Answer: 5√5
  2. 2. Algebra

    Find equation with turning point (5, 10) and coefficient 4

    Answer: y = 4(x - 5)² + 10
  3. 3. Geometry

    Find perimeter: adjacent = 17cm, angle = 35°

    Answer: 49.7cm
  4. 4. Ratio

    48 out of 95 students passed. What percentage passed?

    Answer: 50.5%
  5. 5. Statistics

    A spinner has 4 red, 4 blue and 6 green sections. Probability of landing on red?

    Answer: 2⁄7

Wednesday 7 October 2026

Keystones #280 · Five questions · Open this day only

  1. 1. Number

    Simplify: 9√2 - 5√2

    Answer: 4√2
  2. 2. Algebra

    Find equation with turning point (3, 8) and coefficient 4

    Answer: y = 4(x - 3)² + 8
  3. 3. Geometry

    Find perimeter: adjacent = 21cm, angle = 48°

    Answer: 75.7cm
  4. 4. Ratio

    48 out of 81 students passed. What percentage passed?

    Answer: 59.3%
  5. 5. Statistics

    A spinner has 6 red, 3 blue and 3 green sections. Probability of landing on red?

    Answer: 1⁄2

Thursday 8 October 2026

Keystones #281 · Five questions · Open this day only

  1. 1. Number

    Simplify: 12√3 - 8√3

    Answer: 4√3
  2. 2. Algebra

    Find equation with turning point (2, 8) and coefficient 5

    Answer: y = 5(x - 2)² + 8
  3. 3. Geometry

    Find perimeter: adjacent = 23cm, angle = 41°

    Answer: 73.5cm
  4. 4. Ratio

    42 out of 86 students passed. What percentage passed?

    Answer: 48.8%
  5. 5. Statistics

    A spinner has 4 red, 5 blue and 6 green sections. Probability of landing on red?

    Answer: 4⁄15

Friday 9 October 2026

Keystones #282 · Five questions · Open this day only

  1. 1. Number

    Simplify: 10√2 - 5√2

    Answer: 5√2
  2. 2. Algebra

    Find equation with turning point (3, 9) and coefficient 2

    Answer: y = 2(x - 3)² + 9
  3. 3. Geometry

    Find perimeter: adjacent = 18cm, angle = 56°

    Answer: 76.9cm
  4. 4. Ratio

    37 out of 81 students passed. What percentage passed?

    Answer: 45.7%
  5. 5. Statistics

    A spinner has 5 red, 3 blue and 4 green sections. Probability of landing on red?

    Answer: 5⁄12