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Cornerstone Jan 9 - 15 25 questions
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Monday 9 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 5⁄7

    Answer: 29⁄21
  2. 2. Algebra

    Solve: 4x - 11 = 9

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Share 126 in the ratio 4:3

    Answer: 72 and 54
  5. 5. Statistics

    Find the mean of: 8, 8, 8, 18, 3

    Answer: 9

Tuesday 10 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄8 + 2⁄6

    Answer: 17⁄24
  2. 2. Algebra

    Solve: 5x - 16 = 39

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 6.71cm
  4. 4. Ratio

    Share 91 in the ratio 4:3

    Answer: 52 and 39
  5. 5. Statistics

    Find the mean of: 14, 19, 14, 13, 10

    Answer: 14

Wednesday 11 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄12 + 8⁄12

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 4x + 10 = 50

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Share 100 in the ratio 4:1

    Answer: 80 and 20
  5. 5. Statistics

    Calculate the mean of: 48, 27, 24, 11, 33, 43

    Answer: 31

Thursday 12 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄7 + 2⁄4

    Answer: 19⁄14
  2. 2. Algebra

    Solve: 2x + 7 = 17

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 19.21cm
  4. 4. Ratio

    Share 84 in the ratio 4:3

    Answer: 48 and 36
  5. 5. Statistics

    Calculate the mean of: 37, 47, 26, 19, 39, 50. Give your answer to 2 decimal places

    Answer: 36.33

Friday 13 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄12 + 1⁄12

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 7x - 15 = 62

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Share 90 in the ratio 2:1

    Answer: 60 and 30
  5. 5. Statistics

    Find the mean of: 10, 5, 7, 10

    Answer: 8