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Cornerstone Dec 31 - Jan 6 25 questions
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Monday 31 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄6 + 1⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 4x + 8 = 56

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 168 in the ratio 1:2:3

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

    Find the mean of: 6, 3, 5, 14

    Answer: 7

Tuesday 1 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄12 + 2⁄12

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 3x - 9 = 15

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Divide 120 in the ratio 3:3:4

    Answer: 36, 36 and 48
  5. 5. Statistics

    Calculate the mean of: 17, 6, 45, 25, 36, 28, 25

    Answer: 26

Wednesday 2 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄7 + 2⁄4

    Answer: 17⁄14
  2. 2. Algebra

    Solve: 8x - 15 = 105

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio

    Divide 60 in the ratio 3:2:1

    Answer: 30, 20 and 10
  5. 5. Statistics

    Calculate the mean of: 35, 49, 45, 33, 16, 14, 48, 12

    Answer: 31.5

Thursday 3 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄9 + 2⁄9

    Answer: 4⁄9
  2. 2. Algebra

    Solve: 5x + 8 = 38

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 60 in the ratio 1:4:1

    Answer: 10, 40 and 10
  5. 5. Statistics

    Find the mean of: 2, 19, 3

    Answer: 8

Friday 4 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄10 + 1⁄10

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 3x + 11 = 38

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Share 35 in the ratio 2:3

    Answer: 14 and 21
  5. 5. Statistics

    Calculate the mean of: 46, 31, 43, 18, 33, 37. Give your answer to 2 decimal places

    Answer: 34.67