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Cornerstone Nov 30 - Dec 6 25 questions
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Monday 30 November 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄8 + 2⁄7

    Answer: 23⁄56
  2. 2. Algebra

    Solve: 3x + 6 = 39

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Share 119 in the ratio 4:3

    Answer: 68 and 51
  5. 5. Statistics

    Calculate the mean of: 38, 14, 46, 47, 19, 16, 36. Give your answer to 2 decimal places

    Answer: 30.86

Tuesday 1 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 3x + 9 = 45

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Share 63 in the ratio 3:4

    Answer: 27 and 36
  5. 5. Statistics

    Calculate the mean of: 41, 47, 33, 34, 45, 43, 8. Give your answer to 2 decimal places

    Answer: 35.86

Wednesday 2 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄8 + 1⁄3

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 6x + 6 = 30

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.21cm
  4. 4. Ratio

    Share 48 in the ratio 1:2

    Answer: 16 and 32
  5. 5. Statistics

    Calculate the mean of: 22, 9, 6, 32, 42, 9, 40, 40

    Answer: 25

Thursday 3 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄9 + 1⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 2x - 6 = 2

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio

    Share 20 in the ratio 1:3

    Answer: 5 and 15
  5. 5. Statistics

    Find the mean of: 3, 12, 12

    Answer: 9

Friday 4 December 2015

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄12 + 5⁄12

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 6x - 10 = 50

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Divide 110 in the ratio 1:2:2

    Answer: 22, 44 and 44
  5. 5. Statistics

    Calculate the mean of: 11, 17, 44, 16, 34, 21. Give your answer to 2 decimal places

    Answer: 23.83