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Cornerstone May 17 - 23 25 questions
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Monday 17 May 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄9 + 3⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 3x + 6 = 42

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 150 in the ratio 4:3:3

    Answer: 60, 45 and 45
  5. 5. Statistics

    Calculate the mean of: 22, 45, 31, 14, 39, 41

    Answer: 32

Tuesday 18 May 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 7x + 9 = 30

    Answer: x = 3
  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 91 in the ratio 3:2:2

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

    Calculate the mean of: 40, 13, 42, 30, 23, 30. Give your answer to 2 decimal places

    Answer: 29.67

Wednesday 19 May 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 2⁄5

    Answer: 19⁄35
  2. 2. Algebra

    Solve: 7x - 18 = 31

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 140 in the ratio 4:1:2

    Answer: 80, 20 and 40
  5. 5. Statistics

    Find the mean of: 10, 5, 9, 16

    Answer: 10

Thursday 20 May 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄11 + 3⁄11

    Answer: 5⁄11
  2. 2. Algebra

    Solve: 7x - 13 = 15

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.77cm
  4. 4. Ratio

    Divide 144 in the ratio 4:2:3

    Answer: 64, 32 and 48
  5. 5. Statistics

    Calculate the mean of: 38, 34, 47, 22, 24, 47, 36. Give your answer to 2 decimal places

    Answer: 35.43

Friday 21 May 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 7⁄8 + 2⁄6

    Answer: 29⁄24
  2. 2. Algebra

    Solve: 3x + 12 = 42

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 41cm
  4. 4. Ratio

    Divide 171 in the ratio 4:3:2

    Answer: 76, 57 and 38
  5. 5. Statistics

    Find the mean of: 4, 4, 7

    Answer: 5