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Cornerstone Apr 1 - 7 25 questions
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Monday 1 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 7x + 8 = 71

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 11cm

    Answer: 16.28cm
  4. 4. Ratio

    Share 90 in the ratio 4:1

    Answer: 72 and 18
  5. 5. Statistics

    Calculate the mean of: 34, 15, 6, 37, 5, 45

    Answer: 23.7

Tuesday 2 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 4⁄5

    Answer: 57⁄40
  2. 2. Algebra

    Solve: 7x + 4 = 81

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Share 100 in the ratio 1:4

    Answer: 20 and 80
  5. 5. Statistics

    Calculate the mean of: 28, 5, 12, 14, 7, 5

    Answer: 11.8

Wednesday 3 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄6 + 3⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 7x - 12 = 58

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 14cm

    Answer: 14.56cm
  4. 4. Ratio

    Share 44 in the ratio 1:3

    Answer: 11 and 33
  5. 5. Statistics

    Find the mean of: 9, 17, 6

    Answer: 10.666666666667

Thursday 4 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄10 + 1⁄10

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 3x - 20 = -2

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 7cm

    Answer: 8.06cm
  4. 4. Ratio

    Divide 120 in the ratio 3:2:1

    Answer: 60, 40 and 20
  5. 5. Statistics

    Calculate the mean of: 36, 12, 5, 34, 37, 28, 47

    Answer: 28.4

Friday 5 April 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 4⁄7

    Answer: 26⁄21
  2. 2. Algebra

    Solve: 3x + 13 = 43

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 140 in the ratio 4:3:3

    Answer: 56, 42 and 42
  5. 5. Statistics

    Find the mean of: 6, 2, 7, 9, 13

    Answer: 7.4