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Cornerstone Jan 14 - 20 25 questions
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Monday 14 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄8 + 3⁄6

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 2x - 15 = 15

    Answer: x = 15
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 66 in the ratio 1:3:2

    Answer: 11, 33 and 22
  5. 5. Statistics

    Calculate the mean of: 40, 17, 25, 5, 17, 34, 11. Give your answer to 2 decimal places

    Answer: 21.29

Tuesday 15 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 4x + 8 = 56

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.89cm
  4. 4. Ratio

    Divide 128 in the ratio 4:3:1

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

    Find the mean of: 18, 3, 3, 4, 17

    Answer: 9

Wednesday 16 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄5 + 7⁄8

    Answer: 67⁄40
  2. 2. Algebra

    Solve: 3x + 15 = 42

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 48 in the ratio 2:1:1

    Answer: 24, 12 and 12
  5. 5. Statistics

    Find the mean of: 14, 4, 9

    Answer: 9

Thursday 17 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄9 + 1⁄9

    Answer: 5⁄9
  2. 2. Algebra

    Solve: 8x - 14 = 58

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.87cm
  4. 4. Ratio

    Divide 136 in the ratio 2:1:1

    Answer: 68, 34 and 34
  5. 5. Statistics

    Calculate the mean of: 7, 9, 44, 50, 18, 10

    Answer: 23

Friday 18 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄12 + 4⁄12

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 4x - 19 = 41

    Answer: x = 15
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.81cm
  4. 4. Ratio

    Divide 66 in the ratio 1:2:3

    Answer: 11, 22 and 33
  5. 5. Statistics

    Calculate the mean of: 28, 41, 6, 45, 33, 12

    Answer: 27.5