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Cornerstone May 7 - 13 25 questions
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Monday 7 May 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 3⁄4

    Answer: 17⁄12
  2. 2. Algebra

    Solve: 3x - 13 = 20

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Divide 91 in the ratio 4:1:2

    Answer: 52, 13 and 26
  5. 5. Statistics

    Find the mean of: 13, 9, 2, 12

    Answer: 9

Tuesday 8 May 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄7 + 1⁄4

    Answer: 15⁄28
  2. 2. Algebra

    Solve: 5x - 20 = 55

    Answer: x = 15
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 154 in the ratio 4:4:3

    Answer: 56, 56 and 42
  5. 5. Statistics

    Find the mean of: 8, 18, 7

    Answer: 11

Wednesday 9 May 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 2x + 10 = 18

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio

    Divide 120 in the ratio 2:1:1

    Answer: 60, 30 and 30
  5. 5. Statistics

    Calculate the mean of: 34, 18, 22, 42, 20, 31. Give your answer to 2 decimal places

    Answer: 27.83

Thursday 10 May 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄12 + 2⁄12

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 7x + 13 = 62

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Divide 208 in the ratio 2:1:1

    Answer: 104, 52 and 52
  5. 5. Statistics

    Calculate the mean of: 36, 47, 11, 10, 9, 22, 47

    Answer: 26

Friday 11 May 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 4⁄6

    Answer: 17⁄12
  2. 2. Algebra

    Solve: 4x - 11 = 21

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 14.32cm
  4. 4. Ratio

    Divide 170 in the ratio 1:2:2

    Answer: 34, 68 and 68
  5. 5. Statistics

    Find the mean of: 18, 2, 13, 23

    Answer: 14