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Capstone Jun 11 - 17 25 questions
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Monday 8 June 2026

Keystones #159 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 105. What are the numbers?

    Answer: 34, 35, and 36
  2. 2. Algebra

    Find the next term: 1, 3, 7, 13, ...

    Answer: 21
  3. 3. Geometry

    Adjacent = 26cm, hypotenuse = 42cm. Find the angle

    Answer: 51.8°
  4. 4. Ratio

    Calculate 12.8% of 606

    Answer: 77.57
  5. 5. Statistics

    The mean of 5 numbers is 21. If 4 of them are 46, 30, 41, 44, what is the missing number?

    Answer: -56

Tuesday 9 June 2026

Keystones #160 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 114. What are the numbers?

    Answer: 37, 38, and 39
  2. 2. Algebra

    Solve: x⁄7 = 2.5714285714286

    Answer: x = 18
  3. 3. Geometry

    Adjacent = 20cm, hypotenuse = 32cm. Find the angle

    Answer: 51.3°
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 3 red, 3 blue and 2 green sections. Probability of landing on red?

    Answer: 3⁄8

Wednesday 10 June 2026

Keystones #161 · Five questions · Open this day only

  1. 1. Number

    Calculate: 995 + 694

    Answer: 1689
  2. 2. Algebra

    Solve: x⁄8 = 3.75

    Answer: x = 30
  3. 3. Geometry

    Adjacent = 30cm, hypotenuse = 45cm. Find the angle

    Answer: 48.2°
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 4 red, 6 blue and 2 green sections. Probability of landing on red?

    Answer: 1⁄3

Thursday 11 June 2026

Keystones #162 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 150. What are the numbers?

    Answer: 49, 50, and 51
  2. 2. Algebra

    Factorise fully: 25x² + 30x

    Answer: 5x(5x + 6)
  3. 3. Geometry

    Adjacent = 29cm, hypotenuse = 41cm. Find the angle

    Answer: 45°
  4. 4. Ratio

    Simplify the ratio 2m:200cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 6 numbers is 39. If 5 of them are 34, 48, 31, 40, 34, what is the missing number?

    Answer: 47

Friday 12 June 2026

Keystones #163 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 141. What are the numbers?

    Answer: 46, 47, and 48
  2. 2. Algebra

    Solve: x⁄8 = 3.75

    Answer: x = 30
  3. 3. Geometry

    Adjacent = 13cm, hypotenuse = 21cm. Find the angle

    Answer: 51.8°
  4. 4. Ratio

    Calculate 37.9% of 806

    Answer: 305.47
  5. 5. Statistics

    The mean of 5 numbers is 26. If 4 of them are 42, 39, 43, 49, what is the missing number?

    Answer: -43