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Cornerstone Jul 9 - 15 25 questions
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Monday 9 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄7 + 2⁄7

    Answer: 3⁄7
  2. 2. Algebra

    Solve: 4x - 15 = 37

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 184 in the ratio 2:1:1

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

    Calculate the mean of: 34, 6, 50, 30, 34, 37, 26, 36. Give your answer to 2 decimal places

    Answer: 31.63

Tuesday 10 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄9 + 1⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 3x - 8 = 7

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.52cm
  4. 4. Ratio

    Divide 175 in the ratio 3:3:1

    Answer: 75, 75 and 25
  5. 5. Statistics

    Calculate the mean of: 49, 28, 33, 34, 19, 46, 30. Give your answer to 2 decimal places

    Answer: 34.14

Wednesday 11 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 3⁄6

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 4x + 12 = 40

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Divide 144 in the ratio 2:3:1

    Answer: 48, 72 and 24
  5. 5. Statistics

    Find the mean of: 3, 13, 16, 12, 11

    Answer: 11

Thursday 12 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄12 + 2⁄12

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 2x + 15 = 25

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.08cm
  4. 4. Ratio

    Divide 126 in the ratio 2:4:3

    Answer: 28, 56 and 42
  5. 5. Statistics

    Find the mean of: 11, 2, 2

    Answer: 5

Friday 13 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 2⁄7

    Answer: 24⁄35
  2. 2. Algebra

    Solve: 8x - 15 = 57

    Answer: x = 9
  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 160 in the ratio 3:4:1

    Answer: 60, 80 and 20
  5. 5. Statistics

    Calculate the mean of: 13, 10, 42, 34, 31, 50, 38, 12

    Answer: 28.75