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Cornerstone Dec 20 - 26 25 questions
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Monday 20 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 3x + 14 = 26

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 121 in the ratio 4:3:4

    Answer: 44, 33 and 44
  5. 5. Statistics

    Find the mean of: 7, 17, 3, 5

    Answer: 8

Tuesday 21 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 3⁄8

    Answer: 31⁄40
  2. 2. Algebra

    Solve: 2x - 9 = -1

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 9.22cm
  4. 4. Ratio

    Divide 200 in the ratio 3:2:3

    Answer: 75, 50 and 75
  5. 5. Statistics

    Calculate the mean of: 32, 40, 14, 18, 28, 50, 42, 28

    Answer: 31.5

Wednesday 22 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 7x - 6 = 22

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 78 in the ratio 1:3:2

    Answer: 13, 39 and 26
  5. 5. Statistics

    Calculate the mean of: 11, 15, 14, 15, 11, 38, 15, 46. Give your answer to 2 decimal places

    Answer: 20.63

Thursday 23 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 1⁄4

    Answer: 13⁄20
  2. 2. Algebra

    Solve: 5x + 7 = 57

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 12cm

    Answer: 13cm
  4. 4. Ratio

    Divide 160 in the ratio 3:2:3

    Answer: 60, 40 and 60
  5. 5. Statistics

    Find the mean of: 9, 10, 18, 12, 16

    Answer: 13

Friday 24 December 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 4⁄6

    Answer: 17⁄12
  2. 2. Algebra

    Solve: 3x + 11 = 29

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 12.73cm
  4. 4. Ratio

    Share 90 in the ratio 2:1

    Answer: 60 and 30
  5. 5. Statistics

    Calculate the mean of: 41, 25, 27, 21, 36, 13, 42, 43

    Answer: 31