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Cornerstone Jun 7 - 13 25 questions
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Monday 7 June 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 7⁄8 + 1⁄3

    Answer: 29⁄24
  2. 2. Algebra

    Solve: 4x - 20 = 12

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Divide 132 in the ratio 1:1:4

    Answer: 22, 22 and 88
  5. 5. Statistics

    Calculate the mean of: 26, 20, 6, 48, 47, 47, 45, 28. Give your answer to 2 decimal places

    Answer: 33.38

Tuesday 8 June 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄7 + 4⁄8

    Answer: 19⁄14
  2. 2. Algebra

    Solve: 3x - 8 = 19

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 133 in the ratio 1:3:3

    Answer: 19, 57 and 57
  5. 5. Statistics

    Calculate the mean of: 16, 49, 12, 23, 49, 26, 7, 37. Give your answer to 2 decimal places

    Answer: 27.38

Wednesday 9 June 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄7 + 2⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 7x + 12 = 54

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 55 in the ratio 2:1:2

    Answer: 22, 11 and 22
  5. 5. Statistics

    Find the mean of: 10, 18, 7, 3, 12

    Answer: 10

Thursday 10 June 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄9 + 2⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 4x + 8 = 28

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 140 in the ratio 1:2:4

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

    Find the mean of: 8, 14, 7, 3

    Answer: 8

Friday 11 June 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 2⁄5

    Answer: 11⁄15
  2. 2. Algebra

    Solve: 8x - 16 = 40

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 18.03cm
  4. 4. Ratio

    Divide 80 in the ratio 1:1:2

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

    Calculate the mean of: 38, 49, 5, 12, 16, 33, 32, 35

    Answer: 27.5