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Capstone Jul 9 - 15 25 questions
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Monday 6 July 2026

Keystones #21 · Five questions · Open this day only

  1. 1. Number

    Calculate: 996 + 900

    Answer: 1896
  2. 2. Algebra

    Simplify: 5x - 2x + 7y - 2y

    Answer: 3x + 5y
  3. 3. Geometry

    Adjacent = 14cm, hypotenuse = 20cm. Find the angle

    Answer: 45.6°
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 5 numbers is 22. If 4 of them are 39, 40, 28, 50, what is the missing number?

    Answer: -47

Tuesday 7 July 2026

Keystones #22 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 120. What are the numbers?

    Answer: 39, 40, and 41
  2. 2. Algebra

    Solve: x⁄2 = 13

    Answer: x = 26
  3. 3. Geometry

    Adjacent = 12cm, hypotenuse = 25cm. Find the angle

    Answer: 61.3°
  4. 4. Ratio

    Calculate 27.3% of 505

    Answer: 137.87
  5. 5. Statistics

    The mean of 5 numbers is 27. If 4 of them are 22, 50, 29, 30, what is the missing number?

    Answer: 4

Wednesday 8 July 2026

Keystones #23 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 126. What are the numbers?

    Answer: 41, 42, and 43
  2. 2. Algebra

    Solve: x⁄7 = 1.5714285714286

    Answer: x = 11
  3. 3. Geometry

    Adjacent = 14cm, hypotenuse = 31cm. Find the angle

    Answer: 63.2°
  4. 4. Ratio

    Simplify the ratio 3m:300cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 1⁄2

Thursday 9 July 2026

Keystones #24 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 93. What are the numbers?

    Answer: 30, 31, and 32
  2. 2. Algebra

    Simplify: 11x - 8x + 9y - 4y

    Answer: 3x + 5y
  3. 3. Geometry

    Adjacent = 15cm, hypotenuse = 20cm. Find the angle

    Answer: 41.4°
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 6 numbers is 31. If 5 of them are 47, 32, 17, 40, 50, what is the missing number?

    Answer: 0

Friday 10 July 2026

Keystones #25 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄3 + 2⁄5 + 5⁄6

    Answer: 47⁄30
  2. 2. Algebra

    Solve: x⁄8 = 3.125

    Answer: x = 25
  3. 3. Geometry

    Adjacent = 16cm, hypotenuse = 25cm. Find the angle

    Answer: 50.2°
  4. 4. Ratio

    Calculate 25.6% of 965

    Answer: 247.04
  5. 5. Statistics

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

    Answer: 1⁄3