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Cornerstone Jul 18 - 24 25 questions
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Monday 18 July 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 1⁄5

    Answer: 2⁄5
  2. 2. Algebra

    Solve: 4x + 7 = 55

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 15cm

    Answer: 16.55cm
  4. 4. Ratio

    Divide 120 in the ratio 4:3:3

    Answer: 48, 36 and 36
  5. 5. Statistics

    Find the mean of: 17, 8, 9, 18

    Answer: 13

Tuesday 19 July 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 3⁄6

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 2x - 18 = 10

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 176 in the ratio 1:2:1

    Answer: 44, 88 and 44
  5. 5. Statistics

    Calculate the mean of: 6, 48, 47, 8, 37, 22, 10

    Answer: 25.4

Wednesday 20 July 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄10 + 3⁄10

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 8x - 16 = 64

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 9cm

    Answer: 14.21cm
  4. 4. Ratio

    Divide 65 in the ratio 1:2:2

    Answer: 13, 26 and 26
  5. 5. Statistics

    Find the mean of: 2, 9, 3

    Answer: 4.6666666666667

Thursday 21 July 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 3⁄5

    Answer: 11⁄10
  2. 2. Algebra

    Solve: 7x + 13 = 34

    Answer: x = 3
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Divide 171 in the ratio 4:2:3

    Answer: 76, 38 and 57
  5. 5. Statistics

    Calculate the mean of: 17, 24, 11, 12, 25, 11

    Answer: 16.7

Friday 22 July 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 3⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 6x + 9 = 69

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 4cm

    Answer: 10.77cm
  4. 4. Ratio

    Divide 203 in the ratio 1:4:2

    Answer: 29, 116 and 58
  5. 5. Statistics

    Calculate the mean of: 13, 43, 19, 16, 6, 15, 28, 36

    Answer: 22