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Cornerstone Jan 1 - 7 25 questions
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Monday 27 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2 + 5

    Answer: 7
  2. 2. Algebra

    For y = x³, find y when x = 2

    Answer: y = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 7cm

    Answer: 8.6cm
  4. 4. Ratio

    Simplify the ratio 20:24

    Answer: 5:6
  5. 5. Statistics

    Calculate the mean of: 28, 17, 13, 35, 42, 45

    Answer: 30

Tuesday 28 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 68 + 33

    Answer: 68 + 33 = 101
  2. 2. Algebra

    Solve: x + 13 = 25

    Answer: x = 12
  3. 3. Geometry

    Calculate perimeter: two sides are 11cm and 13cm at right angles

    Answer: 41cm
  4. 4. Ratio

    Calculate 10% of 97

    Answer: 9.7
  5. 5. Statistics

    Calculate the range of: 55, 42, 32, 65, 63, 97

    Answer: 65

Wednesday 29 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 2⁄5

    Answer: 19⁄35
  2. 2. Algebra

    Solve: 7x = 21

    Answer: x = 3
  3. 3. Geometry

    Opposite = 11cm, hypotenuse = 15.6cm. Find the angle

    Answer: 45° (approximately)
  4. 4. Ratio

    Calculate 25% of 121

    Answer: 30.25
  5. 5. Statistics

    Find the mean of: 3, 8, 2, 16, 4

    Answer: 6.6

Thursday 30 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 302 + 318

    Answer: 302 + 318 = 620
  2. 2. Algebra

    Solve: 9x = 81

    Answer: x = 9
  3. 3. Geometry

    Opposite = 20cm, adjacent = 19cm. Calculate the angle

    Answer: 46.5°
  4. 4. Ratio

    Calculate 50% of 24

    Answer: 12
  5. 5. Statistics

    Find the mean of: 2, 6, 8, 4

    Answer: 5

Friday 1 July 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 34 + 50

    Answer: 34 + 50 = 84
  2. 2. Algebra

    Factorise: 24x + 28

    Answer: 4(6x + 7)
  3. 3. Geometry

    Opposite = 10cm, hypotenuse = 14.cm. Find the angle

    Answer: 45° (approximately)
  4. 4. Ratio

    Simplify the ratio 9:18

    Answer: 1:2
  5. 5. Statistics

    Find the range of: 11, 10, 5, 20, 30

    Answer: 25