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Cornerstone Oct 7 - 13 25 questions
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Monday 7 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 8x - 8 = 48

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 16.97cm
  4. 4. Ratio

    Divide 136 in the ratio 1:4:3

    Answer: 17, 68 and 51
  5. 5. Statistics

    Calculate the mean of: 39, 9, 42, 29, 30, 44, 33, 28

    Answer: 31.75

Tuesday 8 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 6x - 5 = 73

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 15.62cm
  4. 4. Ratio

    Divide 90 in the ratio 3:4:2

    Answer: 30, 40 and 20
  5. 5. Statistics

    Calculate the mean of: 35, 45, 15, 43, 26, 31, 14, 34. Give your answer to 2 decimal places

    Answer: 30.38

Wednesday 9 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 3⁄4

    Answer: 19⁄12
  2. 2. Algebra

    Solve: 4x + 10 = 58

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 8.49cm
  4. 4. Ratio

    Divide 154 in the ratio 3:2:2

    Answer: 66, 44 and 44
  5. 5. Statistics

    Find the mean of: 16, 7, 16

    Answer: 13

Thursday 10 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 4⁄5

    Answer: 31⁄20
  2. 2. Algebra

    Solve: 7x + 15 = 78

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Divide 234 in the ratio 1:4:4

    Answer: 26, 104 and 104
  5. 5. Statistics

    Find the mean of: 9, 20, 12, 14, 20

    Answer: 15

Friday 11 October 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 3x - 13 = 29

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 11.31cm
  4. 4. Ratio

    Divide 136 in the ratio 1:3:4

    Answer: 17, 51 and 68
  5. 5. Statistics

    Calculate the mean of: 44, 38, 42, 33, 25, 10

    Answer: 32