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Cornerstone Mar 28 - Apr 3 25 questions
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Monday 28 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 3⁄4

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 3x + 15 = 42

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 48 in the ratio 1:2:1

    Answer: 12, 24 and 12
  5. 5. Statistics

    Find the mean of: 13, 8, 15, 10, 17

    Answer: 12.6

Tuesday 29 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄12 + 4⁄12

    Answer: 5⁄12
  2. 2. Algebra

    Solve: 2x - 6 = 18

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 14cm

    Answer: 14.32cm
  4. 4. Ratio

    Divide 120 in the ratio 1:2:1

    Answer: 30, 60 and 30
  5. 5. Statistics

    Calculate the mean of: 7, 43, 13, 39, 15, 22

    Answer: 23.2

Wednesday 30 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄9 + 3⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 5x - 16 = 14

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Divide 75 in the ratio 3:1:1

    Answer: 45, 15 and 15
  5. 5. Statistics

    Calculate the mean of: 38, 45, 23, 17, 23, 41, 46

    Answer: 33.3

Thursday 31 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄6 + 2⁄7

    Answer: 13⁄21
  2. 2. Algebra

    Solve: 6x + 5 = 59

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 14cm

    Answer: 17.2cm
  4. 4. Ratio

    Divide 91 in the ratio 3:1:3

    Answer: 39, 13 and 39
  5. 5. Statistics

    Find the mean of: 10, 10, 9, 4

    Answer: 8.25

Friday 1 April 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄10 + 3⁄10

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 2x + 15 = 25

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 14cm

    Answer: 15.65cm
  4. 4. Ratio

    Share 70 in the ratio 4:3

    Answer: 40 and 30
  5. 5. Statistics

    Find the mean of: 7, 17, 9

    Answer: 11