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Cornerstone Jan 8 - 14 25 questions
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Monday 8 January 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 3⁄6

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 3x - 20 = 19

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 9.43cm
  4. 4. Ratio

    Divide 174 in the ratio 3:2:1

    Answer: 87, 58 and 29
  5. 5. Statistics

    Find the mean of: 23, 6, 10, 17

    Answer: 14

Tuesday 9 January 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄11 + 2⁄11

    Answer: 7⁄11
  2. 2. Algebra

    Solve: 5x + 5 = 50

    Answer: x = 9
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Divide 180 in the ratio 1:3:2

    Answer: 30, 90 and 60
  5. 5. Statistics

    Calculate the mean of: 44, 15, 7, 49, 10, 5, 16, 50

    Answer: 24.5

Wednesday 10 January 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 5x + 4 = 24

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.26cm
  4. 4. Ratio

    Divide 95 in the ratio 2:2:1

    Answer: 38, 38 and 19
  5. 5. Statistics

    Calculate the mean of: 20, 37, 28, 31, 12, 47. Give your answer to 2 decimal places

    Answer: 29.17

Thursday 11 January 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 1⁄3

    Answer: 8⁄15
  2. 2. Algebra

    Solve: 4x - 7 = 37

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 9.9cm
  4. 4. Ratio

    Divide 243 in the ratio 3:4:2

    Answer: 81, 108 and 54
  5. 5. Statistics

    Find the mean of: 5, 12, 10

    Answer: 9

Friday 12 January 2018

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 7x - 6 = 71

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 8.6cm
  4. 4. Ratio

    Divide 135 in the ratio 2:3:4

    Answer: 30, 45 and 60
  5. 5. Statistics

    Find the mean of: 8, 14, 12, 4, 2

    Answer: 8