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Cornerstone Jan 1 - 7 25 questions
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Monday 14 April 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Find the total of 287, 207, and 92

    Answer: 586
  2. 2. Algebra

    Expand: 6(6x + 2)

    Answer: 36x + 12
  3. 3. Geometry

    Opposite = 8cm, adjacent = 17cm. Calculate the angle

    Answer: 25.2°
  4. 4. Ratio

    Find 70% of 217

    Answer: 151.9
  5. 5. Statistics

    Find the mean of: 11, 2, 14, 2

    Answer: 7.25

Tuesday 15 April 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 70 + 69

    Answer: 70 + 69 = 139
  2. 2. Algebra

    Solve: x + 11 = 23

    Answer: x = 12
  3. 3. Geometry

    Find the perimeter of a right triangle with sides 6cm and 8cm

    Answer: 24cm
  4. 4. Ratio

    Simplify: 8:12:8

    Answer: 2:3:2
  5. 5. Statistics

    Calculate the mean of: 37, 30, 31, 18, 48, 17, 30

    Answer: 30.1

Wednesday 16 April 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 426 + 102

    Answer: 426 + 102 = 528
  2. 2. Algebra

    Expand: 7(x + 3)

    Answer: 7x + 21
  3. 3. Geometry

    Calculate the area of a right triangle with perpendicular sides 6cm and 10cm

    Answer: 30cm²
  4. 4. Ratio

    Simplify: 6:4:12

    Answer: 3:2:6
  5. 5. Statistics

    Calculate the mean of: 12, 32, 23, 36, 13, 37, 5

    Answer: 22.6

Thursday 17 April 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 58 + 46

    Answer: 58 + 46 = 104
  2. 2. Algebra

    Solve: 4x = 12

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Simplify: 8:8:10

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

    Find the mean of: 6, 20, 3

    Answer: 9.6666666666667

Friday 18 April 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 84 + 26

    Answer: 84 + 26 = 110
  2. 2. Algebra

    What is the next term? 6, 18, 54, 162, ...

    Answer: 486
  3. 3. Geometry

    Opposite = 15cm, hypotenuse = 30cm. Find the angle

    Answer: 30° (approximately)
  4. 4. Ratio

    Find 52% of 450

    Answer: 234
  5. 5. Statistics

    Find the mean of: 16, 9, 20, 2

    Answer: 11.75