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Cornerstone Jun 6 - 12 25 questions
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Monday 6 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄7 + 1⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 2x - 9 = 7

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 260 in the ratio 4:3:3

    Answer: 104, 78 and 78
  5. 5. Statistics

    Calculate the mean of: 6, 47, 20, 27, 7, 44, 20

    Answer: 24.4

Tuesday 7 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 3⁄6

    Answer: 9⁄8
  2. 2. Algebra

    Solve: 3x + 3 = 21

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 12cm

    Answer: 14.42cm
  4. 4. Ratio

    Divide 100 in the ratio 1:2:2

    Answer: 20, 40 and 40
  5. 5. Statistics

    Find the mean of: 17, 11, 5, 6

    Answer: 9.75

Wednesday 8 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄5 + 3⁄4

    Answer: 31⁄20
  2. 2. Algebra

    Solve: 2x + 9 = 15

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 12cm

    Answer: 15.62cm
  4. 4. Ratio

    Divide 119 in the ratio 1:2:4

    Answer: 17, 34 and 68
  5. 5. Statistics

    Find the mean of: 10, 17, 12, 19, 11

    Answer: 13.8

Thursday 9 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄11 + 7⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 3x - 15 = -3

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Divide 99 in the ratio 2:3:4

    Answer: 22, 33 and 44
  5. 5. Statistics

    Calculate the mean of: 19, 13, 32, 31, 11, 22, 41, 11

    Answer: 22.5

Friday 10 June 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄7 + 1⁄7

    Answer: 4⁄7
  2. 2. Algebra

    Solve: 8x - 13 = 43

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 14cm

    Answer: 18.44cm
  4. 4. Ratio

    Divide 90 in the ratio 2:1:2

    Answer: 36, 18 and 36
  5. 5. Statistics

    Calculate the mean of: 21, 9, 24, 41, 27, 37

    Answer: 26.5