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Capstone Apr 9 - 15 25 questions
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Monday 13 April 2026

Keystones #103 · 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⁄5 = 6.6

    Answer: x = 33
  3. 3. Geometry

    Adjacent = 19cm, hypotenuse = 25cm. Find the angle

    Answer: 40.5°
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 6 numbers is 40. If 5 of them are 20, 19, 50, 32, 16, what is the missing number?

    Answer: 103

Tuesday 14 April 2026

Keystones #104 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 129. What are the numbers?

    Answer: 42, 43, and 44
  2. 2. Algebra

    Simplify: 10x - 5x + 8y - 6y

    Answer: 5x + 2y
  3. 3. Geometry

    Adjacent = 26cm, hypotenuse = 34cm. Find the angle

    Answer: 40.1°
  4. 4. Ratio

    Calculate 43.7% of 388

    Answer: 169.56
  5. 5. Statistics

    The mean of 4 numbers is 23. If 3 of them are 41, 44, 43, what is the missing number?

    Answer: -36

Wednesday 15 April 2026

Keystones #105 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 2⁄4 + 1⁄2

    Answer: 8⁄5
  2. 2. Algebra

    Solve: x⁄5 = 6.6

    Answer: x = 33
  3. 3. Geometry

    Adjacent = 24cm, hypotenuse = 41cm. Find the angle

    Answer: 54.2°
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 5 red, 3 blue and 6 green sections. Probability of landing on red?

    Answer: 5⁄14

Thursday 16 April 2026

Keystones #106 · 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⁄5 = 6.8

    Answer: x = 34
  3. 3. Geometry

    Adjacent = 22cm, hypotenuse = 40cm. Find the angle

    Answer: 56.6°
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 6 numbers is 23. If 5 of them are 46, 31, 45, 40, 29, what is the missing number?

    Answer: -53

Friday 17 April 2026

Keystones #107 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄2 + 2⁄4 + 5⁄6

    Answer: 11⁄6
  2. 2. Algebra

    Solve: x⁄3 = 2

    Answer: x = 6
  3. 3. Geometry

    Adjacent = 14cm, hypotenuse = 23cm. Find the angle

    Answer: 52.5°
  4. 4. Ratio

    Simplify the ratio 3m:300cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 5 red, 2 blue and 5 green sections. Probability of landing on red?

    Answer: 5⁄12