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Cornerstone Jul 15 - 21 25 questions
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Monday 15 July 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄7 + 3⁄7

    Answer: 4⁄7
  2. 2. Algebra

    Solve: 5x - 7 = 38

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 14.21cm
  4. 4. Ratio

    Divide 70 in the ratio 4:2:1

    Answer: 40, 20 and 10
  5. 5. Statistics

    Find the mean of: 6, 11, 13, 8

    Answer: 9.5

Tuesday 16 July 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄7 + 3⁄6

    Answer: 17⁄14
  2. 2. Algebra

    Solve: 6x - 18 = 66

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 104 in the ratio 4:3:1

    Answer: 52, 39 and 13
  5. 5. Statistics

    Find the mean of: 5, 6, 7

    Answer: 6

Wednesday 17 July 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 3x + 8 = 26

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 14.14cm
  4. 4. Ratio

    Divide 253 in the ratio 4:4:3

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

    Calculate the mean of: 32, 17, 10, 49, 50, 31, 20, 20

    Answer: 28.6

Thursday 18 July 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄8 + 2⁄8

    Answer: 5⁄8
  2. 2. Algebra

    Solve: 2x + 5 = 13

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 8cm

    Answer: 8.94cm
  4. 4. Ratio

    Divide 110 in the ratio 3:3:4

    Answer: 33, 33 and 44
  5. 5. Statistics

    Calculate the mean of: 12, 5, 5, 44, 43, 33, 15, 24

    Answer: 22.6

Friday 19 July 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 3⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 7x - 17 = 60

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Divide 85 in the ratio 1:1:3

    Answer: 17, 17 and 51
  5. 5. Statistics

    Find the mean of: 11, 3, 10, 4

    Answer: 7