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Cornerstone Dec 16 - 22 25 questions
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Monday 16 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄7 + 1⁄7

    Answer: 4⁄7
  2. 2. Algebra

    Solve: 7x + 14 = 63

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Share 75 in the ratio 2:3

    Answer: 30 and 45
  5. 5. Statistics

    Find the mean of: 3, 14, 16, 13, 9

    Answer: 11

Tuesday 17 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄7 + 7⁄8

    Answer: 97⁄56
  2. 2. Algebra

    Solve: 5x - 10 = 60

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 5cm. Give your answer to 2 decimal places

    Answer: 7.81cm
  4. 4. Ratio

    Share 64 in the ratio 1:3

    Answer: 16 and 48
  5. 5. Statistics

    Calculate the mean of: 22, 22, 20, 30, 37, 50, 27, 6

    Answer: 26.75

Wednesday 18 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 1⁄4

    Answer: 5⁄12
  2. 2. Algebra

    Solve: 3x - 17 = -2

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 10.82cm
  4. 4. Ratio

    Share 25 in the ratio 2:3

    Answer: 10 and 15
  5. 5. Statistics

    Calculate the mean of: 20, 28, 6, 40, 8, 23, 8

    Answer: 19

Thursday 19 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄8 + 2⁄8

    Answer: 3⁄8
  2. 2. Algebra

    Solve: 5x + 4 = 44

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Share 108 in the ratio 1:2

    Answer: 36 and 72
  5. 5. Statistics

    Find the mean of: 14, 4, 24

    Answer: 14

Friday 20 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 3⁄5

    Answer: 19⁄15
  2. 2. Algebra

    Solve: 3x + 3 = 21

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio

    Share 42 in the ratio 2:1

    Answer: 28 and 14
  5. 5. Statistics

    Calculate the mean of: 11, 18, 49, 43, 34, 27. Give your answer to 2 decimal places

    Answer: 30.33