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Cornerstone Apr 22 - 28 25 questions
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Monday 22 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 2x + 13 = 33

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 65 in the ratio 1:4

    Answer: 13 and 52
  5. 5. Statistics

    Find the mean of: 4, 7, 7, 3

    Answer: 5.25

Tuesday 23 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 2⁄8

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 8x - 7 = 65

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 15.62cm
  4. 4. Ratio

    Share 100 in the ratio 3:2

    Answer: 60 and 40
  5. 5. Statistics

    Calculate the mean of: 40, 11, 32, 8, 36, 16, 22

    Answer: 23.6

Wednesday 24 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 3⁄8

    Answer: 37⁄56
  2. 2. Algebra

    Solve: 7x - 7 = 63

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 4cm

    Answer: 12.65cm
  4. 4. Ratio

    Divide 184 in the ratio 1:4:3

    Answer: 23, 92 and 69
  5. 5. Statistics

    Find the mean of: 20, 8, 20, 10, 20

    Answer: 15.6

Thursday 25 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄7 + 1⁄7

    Answer: 4⁄7
  2. 2. Algebra

    Solve: 6x + 15 = 75

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Divide 80 in the ratio 1:3:1

    Answer: 16, 48 and 16
  5. 5. Statistics

    Calculate the mean of: 25, 31, 13, 41, 32, 50

    Answer: 32

Friday 26 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄6 + 4⁄8

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 6x + 7 = 43

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 10cm

    Answer: 11.66cm
  4. 4. Ratio

    Divide 144 in the ratio 2:3:4

    Answer: 32, 48 and 64
  5. 5. Statistics

    Calculate the mean of: 39, 8, 46, 50, 34, 28

    Answer: 34.2