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Capstone Mar 19 - 25 25 questions
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Monday 23 March 2026

Keystones #82 · 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⁄4 = 9.5

    Answer: x = 38
  3. 3. Geometry

    Find c if a = 20cm and b = 23cm in a right triangle

    Answer: 30.5cm
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 1⁄4

Tuesday 24 March 2026

Keystones #83 · Five questions · Open this day only

  1. 1. Number

    Calculate: 990 + 572

    Answer: 1562
  2. 2. Algebra

    Solve: x⁄2 = 7.5

    Answer: x = 15
  3. 3. Geometry

    Adjacent = 16cm, hypotenuse = 35cm. Find the angle

    Answer: 62.8°
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 5 numbers is 24. If 4 of them are 23, 34, 22, 15, what is the missing number?

    Answer: 26

Wednesday 25 March 2026

Keystones #84 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄2 + 3⁄4 + 2⁄3

    Answer: 23⁄12
  2. 2. Algebra

    Find the next term: 1, 2, 4, 7, ...

    Answer: 11
  3. 3. Geometry

    Adjacent = 28cm, hypotenuse = 34cm. Find the angle

    Answer: 34.6°
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 5 numbers is 38. If 4 of them are 15, 38, 32, 33, what is the missing number?

    Answer: 72

Thursday 26 March 2026

Keystones #85 · 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

    Find the next term: 1, 2, 4, 7, ...

    Answer: 11
  3. 3. Geometry

    Adjacent = 18cm, hypotenuse = 25cm. Find the angle

    Answer: 43.9°
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 2⁄7

Friday 27 March 2026

Keystones #86 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 135. What are the numbers?

    Answer: 44, 45, and 46
  2. 2. Algebra

    Solve: x⁄7 = 1.8571428571429

    Answer: x = 13
  3. 3. Geometry

    Adjacent = 18cm, hypotenuse = 26cm. Find the angle

    Answer: 46.2°
  4. 4. Ratio

    Calculate 27% of 903

    Answer: 243.81
  5. 5. Statistics

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

    Answer: 1⁄4