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Cornerstone Jan 13 - 19 25 questions
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Monday 13 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 1⁄5

    Answer: 31⁄30
  2. 2. Algebra

    Solve: 7x + 14 = 91

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Share 77 in the ratio 3:4

    Answer: 33 and 44
  5. 5. Statistics

    Find the mean of: 13, 17, 5, 11, 9

    Answer: 11

Tuesday 14 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 6⁄8

    Answer: 17⁄12
  2. 2. Algebra

    Solve: 6x + 13 = 43

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio

    Divide 72 in the ratio 1:1:4

    Answer: 12, 12 and 48
  5. 5. Statistics

    Calculate the mean of: 11, 5, 11, 43, 22, 5. Give your answer to 2 decimal places

    Answer: 16.17

Wednesday 15 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 4x - 12 = 16

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio

    Divide 168 in the ratio 3:1:2

    Answer: 84, 28 and 56
  5. 5. Statistics

    Find the mean of: 3, 2, 9, 14

    Answer: 7

Thursday 16 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 7⁄8

    Answer: 65⁄56
  2. 2. Algebra

    Solve: 5x - 16 = 34

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 156 in the ratio 2:3:1

    Answer: 52, 78 and 26
  5. 5. Statistics

    Find the mean of: 11, 3, 16

    Answer: 10

Friday 17 January 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 2x + 12 = 18

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 11.31cm
  4. 4. Ratio

    Divide 174 in the ratio 3:1:2

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

    Calculate the mean of: 43, 37, 49, 43, 37, 36, 43. Give your answer to 2 decimal places

    Answer: 41.14