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Cornerstone Sep 11 - 17 25 questions
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Monday 11 September 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 7x + 11 = 74

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 12.81cm
  4. 4. Ratio

    Divide 330 in the ratio 4:4:3

    Answer: 120, 120 and 90
  5. 5. Statistics

    Calculate the mean of: 28, 27, 50, 24, 9, 46, 6. Give your answer to 2 decimal places

    Answer: 27.14

Tuesday 12 September 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 7⁄8 + 2⁄4

    Answer: 11⁄8
  2. 2. Algebra

    Solve: 7x + 9 = 79

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Divide 102 in the ratio 2:1:3

    Answer: 34, 17 and 51
  5. 5. Statistics

    Calculate the mean of: 14, 32, 8, 34, 16, 29. Give your answer to 2 decimal places

    Answer: 22.17

Wednesday 13 September 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄11 + 3⁄11

    Answer: 8⁄11
  2. 2. Algebra

    Solve: 2x - 20 = -6

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 78 in the ratio 1:4:1

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

    Find the mean of: 20, 9, 19, 11, 11

    Answer: 14

Thursday 14 September 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 5x - 17 = 28

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio

    Share 24 in the ratio 3:1

    Answer: 18 and 6
  5. 5. Statistics

    Calculate the mean of: 37, 35, 7, 14, 18, 33

    Answer: 24

Friday 15 September 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 1⁄3

    Answer: 13⁄21
  2. 2. Algebra

    Solve: 3x + 13 = 37

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Share 20 in the ratio 3:1

    Answer: 15 and 5
  5. 5. Statistics

    Find the mean of: 12, 12, 24, 12

    Answer: 15