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Capstone Apr 2 - 8 25 questions
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Monday 6 April 2026

Keystones #96 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 90. What are the numbers?

    Answer: 29, 30, and 31
  2. 2. Algebra

    Solve: x⁄8 = 5

    Answer: x = 40
  3. 3. Geometry

    Adjacent = 29cm, hypotenuse = 35cm. Find the angle

    Answer: 34°
  4. 4. Ratio

    Calculate 39.4% of 577

    Answer: 227.34
  5. 5. Statistics

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

    Answer: 1⁄4

Tuesday 7 April 2026

Keystones #97 · Five questions · Open this day only

  1. 1. Number

    Simplify: y4 × y2 × y2

    Answer: y8
  2. 2. Algebra

    Simplify: 11x - 8x + 10y - 8y

    Answer: 3x + 2y
  3. 3. Geometry

    Adjacent = 28cm, hypotenuse = 44cm. Find the angle

    Answer: 50.5°
  4. 4. Ratio

    Simplify the ratio 4m:400cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 5 numbers is 39. If 4 of them are 23, 23, 17, 45, what is the missing number?

    Answer: 87

Wednesday 8 April 2026

Keystones #98 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 132. What are the numbers?

    Answer: 43, 44, and 45
  2. 2. Algebra

    Solve: x⁄6 = 4

    Answer: x = 24
  3. 3. Geometry

    Adjacent = 21cm, hypotenuse = 29cm. Find the angle

    Answer: 43.6°
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 1⁄2

Thursday 9 April 2026

Keystones #99 · Five questions · Open this day only

  1. 1. Number

    Simplify: y2 × y5 × y5

    Answer: y12
  2. 2. Algebra

    Factorise fully: 12x² + 6x

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

    Adjacent = 20cm, hypotenuse = 27cm. Find the angle

    Answer: 42.2°
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 4 numbers is 25. If 3 of them are 25, 38, 44, what is the missing number?

    Answer: -7

Friday 10 April 2026

Keystones #100 · Five questions · Open this day only

  1. 1. Number

    Calculate: 999 + 853

    Answer: 1852
  2. 2. Algebra

    Factorise fully: 21x² + 15x

    Answer: 3x(7x + 5)
  3. 3. Geometry

    Adjacent = 23cm, hypotenuse = 42cm. Find the angle

    Answer: 56.8°
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 3⁄7