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Cornerstone Sep 25 - Oct 1 25 questions
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Monday 25 September 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 3⁄5

    Answer: 36⁄35
  2. 2. Algebra

    Solve: 4x - 17 = 35

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Divide 192 in the ratio 1:2:1

    Answer: 48, 96 and 48
  5. 5. Statistics

    Calculate the mean of: 39, 21, 18, 32, 23, 41, 33, 32. Give your answer to 2 decimal places

    Answer: 29.88

Tuesday 26 September 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 4x - 14 = 46

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.3cm
  4. 4. Ratio

    Divide 52 in the ratio 1:1:2

    Answer: 13, 13 and 26
  5. 5. Statistics

    Calculate the mean of: 13, 17, 8, 8, 8, 32, 35. Give your answer to 2 decimal places

    Answer: 17.29

Wednesday 27 September 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄5 + 1⁄7

    Answer: 26⁄35
  2. 2. Algebra

    Solve: 7x + 10 = 73

    Answer: x = 9
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Divide 84 in the ratio 3:2:1

    Answer: 42, 28 and 14
  5. 5. Statistics

    Find the mean of: 15, 16, 8

    Answer: 13

Thursday 28 September 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄8 + 4⁄7

    Answer: 23⁄28
  2. 2. Algebra

    Solve: 3x + 8 = 44

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 162 in the ratio 2:1:3

    Answer: 54, 27 and 81
  5. 5. Statistics

    Find the mean of: 11, 6, 5, 6

    Answer: 7

Friday 29 September 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄8 + 2⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 3x - 5 = 13

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 16.4cm
  4. 4. Ratio

    Divide 126 in the ratio 2:4:3

    Answer: 28, 56 and 42
  5. 5. Statistics

    Calculate the mean of: 39, 24, 27, 47, 37, 20, 17, 47

    Answer: 32.25