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Cornerstone Jul 18 - 24 25 questions
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Monday 18 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄8 + 5⁄7

    Answer: 47⁄56
  2. 2. Algebra

    Solve: 3x - 16 = 20

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Divide 128 in the ratio 4:1:3

    Answer: 64, 16 and 48
  5. 5. Statistics

    Calculate the mean of: 23, 35, 23, 14, 15, 36, 39, 38. Give your answer to 2 decimal places

    Answer: 27.88

Tuesday 19 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 4x + 12 = 60

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 12.73cm
  4. 4. Ratio

    Divide 119 in the ratio 3:1:3

    Answer: 51, 17 and 51
  5. 5. Statistics

    Find the mean of: 7, 6, 5

    Answer: 6

Wednesday 20 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄7 + 3⁄8

    Answer: 69⁄56
  2. 2. Algebra

    Solve: 4x + 13 = 45

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 252 in the ratio 2:4:3

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

    Calculate the mean of: 40, 23, 9, 37, 15, 31, 49, 47. Give your answer to 2 decimal places

    Answer: 31.38

Thursday 21 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄12 + 1⁄12

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 6x - 19 = 59

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 11.18cm
  4. 4. Ratio

    Divide 150 in the ratio 1:2:3

    Answer: 25, 50 and 75
  5. 5. Statistics

    Find the mean of: 23, 7, 13, 9

    Answer: 13

Friday 22 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄7 + 2⁄3

    Answer: 32⁄21
  2. 2. Algebra

    Solve: 2x - 20 = -10

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 126 in the ratio 1:4:2

    Answer: 18, 72 and 36
  5. 5. Statistics

    Find the mean of: 11, 19, 12, 6, 2

    Answer: 10