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Cornerstone Jan 1 - 7 25 questions
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Monday 4 July 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 31 + 86

    Answer: 31 + 86 = 117
  2. 2. Algebra

    Collect like terms: 7x + 7y + 5x + 7y

    Answer: 12x + 14y
  3. 3. Geometry

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

    Answer: 12cm
  4. 4. Ratio

    Find 55% of 278

    Answer: 152.9
  5. 5. Statistics

    Find the mean of: 6, 3, 9, 11

    Answer: 7.25

Tuesday 5 July 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 44 + ? = 149

    Answer: 105
  2. 2. Algebra

    Find the next term: 11, 19, 27, 35, ...

    Answer: 43
  3. 3. Geometry

    Opposite = 12cm, adjacent = 16cm. Calculate the angle

    Answer: 36.9°
  4. 4. Ratio

    Find 17% of 347

    Answer: 58.99
  5. 5. Statistics

    Calculate the mean of: 42, 17, 10, 21, 48, 47, 48, 38

    Answer: 33.9

Wednesday 6 July 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6 + (-10)

    Answer: -4
  2. 2. Algebra

    Simplify: 3x + 9x

    Answer: 12x
  3. 3. Geometry

    Opposite = 14cm, hypotenuse = 16.2cm. Find the angle

    Answer: 60° (approximately)
  4. 4. Ratio

    Simplify: 12:18:6

    Answer: 2:3:1
  5. 5. Statistics

    Calculate the mean of: 13, 40, 5, 6, 45, 44, 50, 6

    Answer: 26.1

Thursday 7 July 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 615 + 435

    Answer: 615 + 435 = 1050
  2. 2. Algebra

    Solve: 4x = 48

    Answer: x = 12
  3. 3. Geometry

    Opposite = 9cm, adjacent = 15cm. Calculate the angle

    Answer: 31°
  4. 4. Ratio

    Simplify: 18:6:6

    Answer: 3:1:1
  5. 5. Statistics

    Find the mean of: 17, 20, 3

    Answer: 13.333333333333

Friday 8 July 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 49 + ? = 116

    Answer: 67
  2. 2. Algebra

    Solve: 2x = 26

    Answer: x = 13
  3. 3. Geometry

    Calculate perimeter: two sides are 15cm and 10cm at right angles

    Answer: 43cm
  4. 4. Ratio

    Simplify: 9:6:6

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

    Find the mean of: 2, 8, 15, 20, 8

    Answer: 10.6