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Cornerstone Oct 8 - 14 25 questions
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Monday 8 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 4⁄6

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 5x - 5 = 55

    Answer: x = 12
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Divide 168 in the ratio 1:3:3

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

    Calculate the mean of: 29, 13, 47, 38, 44, 11, 49, 50. Give your answer to 2 decimal places

    Answer: 35.13

Tuesday 9 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 1⁄5

    Answer: 2⁄5
  2. 2. Algebra

    Solve: 3x + 3 = 21

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 17.49cm
  4. 4. Ratio

    Divide 208 in the ratio 1:1:2

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

    Find the mean of: 19, 5, 11, 5

    Answer: 10

Wednesday 10 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄11 + 1⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 5x + 4 = 39

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 230 in the ratio 3:3:4

    Answer: 69, 69 and 92
  5. 5. Statistics

    Find the mean of: 4, 13, 7

    Answer: 8

Thursday 11 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 1⁄3

    Answer: 10⁄21
  2. 2. Algebra

    Solve: 8x - 14 = 34

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 16.28cm
  4. 4. Ratio

    Divide 184 in the ratio 4:3:1

    Answer: 92, 69 and 23
  5. 5. Statistics

    Calculate the mean of: 45, 15, 30, 23, 12, 9. Give your answer to 2 decimal places

    Answer: 22.33

Friday 12 October 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄10 + 1⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 2x - 9 = 13

    Answer: x = 11
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio

    Divide 77 in the ratio 2:2:3

    Answer: 22, 22 and 33
  5. 5. Statistics

    Calculate the mean of: 19, 32, 15, 16, 48, 39, 9, 46

    Answer: 28