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Cornerstone Jun 4 - 10 25 questions
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Monday 1 June 2026

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 539 + 298

    Answer: 539 + 298 = 837
  2. 2. Algebra

    Find the next term: 18, 27, 36, 45, ...

    Answer: 54
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 6cm

    Answer: 12.53cm
  4. 4. Ratio

    Calculate 25% of 159

    Answer: 39.75
  5. 5. Statistics

    A bag has 4 red and 7 blue balls. What is the probability of picking a red ball?

    Answer: 411

Tuesday 2 June 2026

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 42 + 20

    Answer: 42 + 20 = 62
  2. 2. Algebra

    Simplify: 8x + 4x

    Answer: 12x
  3. 3. Geometry

    Find the area of a circle with radius 8cm

    Answer: 201.06cm²
  4. 4. Ratio

    Calculate 10% of 31

    Answer: 3.1
  5. 5. Statistics

    Calculate the range of: 36, 28, 45, 39, 97, 65

    Answer: 69

Wednesday 3 June 2026

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 67 + 34

    Answer: 4528
  2. 2. Algebra

    Solve: 6x = 66

    Answer: x = 11
  3. 3. Geometry

    Opposite = 15cm, adjacent = 8cm. Calculate the angle

    Answer: 61.9°
  4. 4. Ratio

    Simplify the ratio 4:14

    Answer: 2:7
  5. 5. Statistics

    Find the range of: 32, 15, 38, 34, 21

    Answer: 23

Thursday 4 June 2026

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 366 + 778

    Answer: 366 + 778 = 1144
  2. 2. Algebra

    Collect like terms: 3x + 2y + 5x + 5y

    Answer: 8x + 7y
  3. 3. Geometry

    Calculate the area of a circle with diameter 17cm

    Answer: 226.98cm²
  4. 4. Ratio

    Simplify: 15:12:9

    Answer: 5:4:3
  5. 5. Statistics

    Calculate the mean of: 21, 14, 15, 12, 39, 24, 24

    Answer: 21.3

Friday 5 June 2026

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 96 + 77

    Answer: 96 + 77 = 173
  2. 2. Algebra

    Factorise: 15x + 15

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

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Find 75% of 105

    Answer: 78.75
  5. 5. Statistics

    Find the range of: 25, 19, 19, 22, 29

    Answer: 10