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Capstone Mar 12 - 18 25 questions
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Monday 9 March 2026

Keystones #68 · 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

    Simplify: 5x - 2x + 3y - 2y

    Answer: 3x + y
  3. 3. Geometry

    Adjacent = 16cm, hypotenuse = 21cm. Find the angle

    Answer: 40.4°
  4. 4. Ratio

    Calculate 24.2% of 257

    Answer: 62.19
  5. 5. Statistics

    The mean of 6 numbers is 39. If 5 of them are 34, 19, 34, 22, 33, what is the missing number?

    Answer: 92

Tuesday 10 March 2026

Keystones #69 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 138. What are the numbers?

    Answer: 45, 46, and 47
  2. 2. Algebra

    Solve: x⁄8 = 1.125

    Answer: x = 9
  3. 3. Geometry

    Adjacent = 19cm, hypotenuse = 33cm. Find the angle

    Answer: 54.8°
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 5⁄12

Wednesday 11 March 2026

Keystones #70 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 1⁄3 + 2⁄5

    Answer: 17⁄15
  2. 2. Algebra

    Complete the square: x² + 3.2x

    Answer: (x + 1.6)² - 2.56
  3. 3. Geometry

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

    Answer: 34.6°
  4. 4. Ratio

    Simplify the ratio 4m:400cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 3⁄7

Thursday 12 March 2026

Keystones #71 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 123. What are the numbers?

    Answer: 40, 41, and 42
  2. 2. Algebra

    Simplify: 10x - 3x + 10y - 6y

    Answer: 7x + 4y
  3. 3. Geometry

    Adjacent = 30cm, hypotenuse = 46cm. Find the angle

    Answer: 49.3°
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 6 red, 5 blue and 4 green sections. Probability of landing on red?

    Answer: 2⁄5

Friday 13 March 2026

Keystones #72 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 111. What are the numbers?

    Answer: 36, 37, and 38
  2. 2. Algebra

    Solve: x⁄7 = 4.8571428571429

    Answer: x = 34
  3. 3. Geometry

    Adjacent = 30cm, hypotenuse = 42cm. Find the angle

    Answer: 44.4°
  4. 4. Ratio

    Calculate 49.1% of 518

    Answer: 254.34
  5. 5. Statistics

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

    Answer: 1⁄3