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Capstone May 21 - 27 25 questions
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Monday 25 May 2026

Keystones #145 · Five questions · Open this day only

  1. 1. Number

    Calculate: 995 + 509

    Answer: 1504
  2. 2. Algebra

    Find the next term: 1, 4, 10, 19, ...

    Answer: 31
  3. 3. Geometry

    Adjacent = 12cm, hypotenuse = 19cm. Find the angle

    Answer: 50.8°
  4. 4. Ratio

    Simplify the ratio 4m:400cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 25

Tuesday 26 May 2026

Keystones #146 · 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

    Factorise fully: 18x² + 15x

    Answer: 3x(6x + 5)
  3. 3. Geometry

    Adjacent = 16cm, hypotenuse = 26cm. Find the angle

    Answer: 52°
  4. 4. Ratio

    Simplify the ratio 2m:200cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 5 numbers is 26. If 4 of them are 28, 36, 34, 16, what is the missing number?

    Answer: 16

Wednesday 27 May 2026

Keystones #147 · Five questions · Open this day only

  1. 1. Number

    Calculate: 990 + 832

    Answer: 1822
  2. 2. Algebra

    Factorise fully: 16x² + 20x

    Answer: 4x(4x + 5)
  3. 3. Geometry

    Adjacent = 15cm, hypotenuse = 29cm. Find the angle

    Answer: 58.9°
  4. 4. Ratio

    Calculate 36.5% of 933

    Answer: 340.55
  5. 5. Statistics

    The mean of 6 numbers is 28. If 5 of them are 43, 15, 44, 35, 16, what is the missing number?

    Answer: 15

Thursday 28 May 2026

Keystones #148 · Five questions · Open this day only

  1. 1. Number

    Calculate: 992 + 590

    Answer: 1582
  2. 2. Algebra

    Solve: x6 = 6.5

    Answer: x = 39
  3. 3. Geometry

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

    Answer: 61.3°
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 4 numbers is 32. If 3 of them are 35, 41, 26, what is the missing number?

    Answer: 26

Friday 29 May 2026

Keystones #149 · 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: x7 = 3.4285714285714

    Answer: x = 24
  3. 3. Geometry

    Adjacent = 27cm, hypotenuse = 32cm. Find the angle

    Answer: 32.5°
  4. 4. Ratio

    Simplify the ratio 5m:500cm

    Answer: 1:100
  5. 5. Statistics

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

    Answer: 12