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Capstone Aug 6 - 12 25 questions
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Monday 3 August 2026

Keystones #49 · Five questions · Open this day only

  1. 1. Number

    Find the missing number: 2.06 + □ = 13.12

    Answer: □ = 11.06
  2. 2. Algebra

    Solve: x⁄2 = 7

    Answer: x = 14
  3. 3. Geometry

    Adjacent = 12cm, hypotenuse = 20cm. Find the angle

    Answer: 53.1°
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 4 numbers is 29. If 3 of them are 35, 26, 35, what is the missing number?

    Answer: 20

Tuesday 4 August 2026

Keystones #50 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 141. What are the numbers?

    Answer: 46, 47, and 48
  2. 2. Algebra

    Solve: x⁄5 = 7.4

    Answer: x = 37
  3. 3. Geometry

    Adjacent = 12cm, hypotenuse = 17cm. Find the angle

    Answer: 45.1°
  4. 4. Ratio

    Calculate 38.3% of 901

    Answer: 345.08
  5. 5. Statistics

    The mean of 6 numbers is 28. If 5 of them are 34, 26, 35, 15, 15, what is the missing number?

    Answer: 43

Wednesday 5 August 2026

Keystones #51 · Five questions · Open this day only

  1. 1. Number

    Simplify: √8 + √18

    Answer: 2√2 + 3√2 = 5√2
  2. 2. Algebra

    Solve: x⁄7 = 5.5714285714286

    Answer: x = 39
  3. 3. Geometry

    Adjacent = 27cm, hypotenuse = 43cm. Find the angle

    Answer: 51.1°
  4. 4. Ratio

    Simplify the ratio 6m:600cm

    Answer: 1:100
  5. 5. Statistics

    A spinner has 2 red, 6 blue and 5 green sections. Probability of landing on red?

    Answer: 2⁄13

Thursday 6 August 2026

Keystones #52 · 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

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

    Answer: 11
  3. 3. Geometry

    Adjacent = 25cm, hypotenuse = 37cm. Find the angle

    Answer: 47.5°
  4. 4. Ratio

    Simplify the ratio 8m:800cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 2⁄5

Friday 7 August 2026

Keystones #53 · Five questions · Open this day only

  1. 1. Number

    Calculate: 990 + 630

    Answer: 1620
  2. 2. Algebra

    Solve: x⁄7 = 2.2857142857143

    Answer: x = 16
  3. 3. Geometry

    Adjacent = 18cm, hypotenuse = 37cm. Find the angle

    Answer: 60.9°
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 4 numbers is 28. If 3 of them are 23, 15, 34, what is the missing number?

    Answer: 40