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Cornerstone Mar 14 - 20 25 questions
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Monday 14 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 5x - 16 = 44

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 6cm

    Answer: 10cm
  4. 4. Ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics

    Calculate the mean of: 8, 38, 16, 21, 43, 37, 18, 41

    Answer: 27.8

Tuesday 15 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 2⁄8

    Answer: 1⁄1
  2. 2. Algebra

    Solve: 7x + 13 = 34

    Answer: x = 3
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio

    Share 84 in the ratio 3:4

    Answer: 36 and 48
  5. 5. Statistics

    Find the mean of: 11, 15, 7

    Answer: 11

Wednesday 16 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 5x + 3 = 18

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 14.42cm
  4. 4. Ratio

    Share 72 in the ratio 1:3

    Answer: 18 and 54
  5. 5. Statistics

    Find the mean of: 17, 4, 18, 15, 20

    Answer: 14.8

Thursday 17 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄8 + 2⁄3

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 5x - 16 = 39

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 30 in the ratio 1:4

    Answer: 6 and 24
  5. 5. Statistics

    Calculate the mean of: 12, 15, 34, 19, 35, 5, 11

    Answer: 18.7

Friday 18 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 4⁄6

    Answer: 20⁄21
  2. 2. Algebra

    Solve: 7x - 20 = 78

    Answer: x = 14
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio

    Share 55 in the ratio 3:2

    Answer: 33 and 22
  5. 5. Statistics

    Calculate the mean of: 14, 40, 17, 47, 40, 28, 35, 40

    Answer: 32.6