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Cornerstone Apr 15 - 21 25 questions
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Monday 15 April 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 1⁄7

    Answer: 10⁄21
  2. 2. Algebra

    Solve: 5x + 3 = 23

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio

    Divide 252 in the ratio 3:2:4

    Answer: 84, 56 and 112
  5. 5. Statistics

    Calculate the mean of: 19, 47, 8, 21, 27, 7, 47. Give your answer to 2 decimal places

    Answer: 25.14

Tuesday 16 April 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄9 + 2⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 5x + 10 = 45

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 14.14cm
  4. 4. Ratio

    Divide 161 in the ratio 1:2:4

    Answer: 23, 46 and 92
  5. 5. Statistics

    Calculate the mean of: 28, 8, 39, 36, 35, 33. Give your answer to 2 decimal places

    Answer: 29.83

Wednesday 17 April 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄6 + 6⁄7

    Answer: 32⁄21
  2. 2. Algebra

    Solve: 5x - 17 = 33

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 40 in the ratio 1:2:1

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

    Find the mean of: 12, 4, 8, 12

    Answer: 9

Thursday 18 April 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 6⁄7

    Answer: 32⁄21
  2. 2. Algebra

    Solve: 2x - 17 = 9

    Answer: x = 13
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Divide 192 in the ratio 2:1:1

    Answer: 96, 48 and 48
  5. 5. Statistics

    Find the mean of: 20, 12, 6, 2

    Answer: 10

Friday 19 April 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 7x + 3 = 59

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Divide 144 in the ratio 1:1:4

    Answer: 24, 24 and 96
  5. 5. Statistics

    Calculate the mean of: 11, 31, 33, 9, 10, 5, 21, 30

    Answer: 18.75