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Cornerstone Dec 12 - 18 25 questions
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Monday 12 December 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 4⁄8

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 5x + 10 = 45

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 25 in the ratio 2:3

    Answer: 10 and 15
  5. 5. Statistics

    Find the mean of: 15, 16, 8, 19, 17

    Answer: 15

Tuesday 13 December 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄6 + 1⁄6

    Answer: 1⁄3
  2. 2. Algebra

    Solve: 3x - 6 = 18

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 8cm

    Answer: 10cm
  4. 4. Ratio

    Share 45 in the ratio 3:2

    Answer: 27 and 18
  5. 5. Statistics

    Calculate the mean of: 10, 34, 39, 12, 46, 21, 18. Give your answer to 2 decimal places

    Answer: 25.71

Wednesday 14 December 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 8x - 19 = 21

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.52cm
  4. 4. Ratio

    Divide 80 in the ratio 2:1:2

    Answer: 32, 16 and 32
  5. 5. Statistics

    Find the mean of: 17, 13, 20, 6

    Answer: 14

Thursday 15 December 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 2⁄3

    Answer: 17⁄12
  2. 2. Algebra

    Solve: 7x + 7 = 35

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 208 in the ratio 1:4:3

    Answer: 26, 104 and 78
  5. 5. Statistics

    Calculate the mean of: 45, 23, 20, 35, 44, 37, 41

    Answer: 35

Friday 16 December 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄8 + 6⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 4x + 3 = 27

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 16.4cm
  4. 4. Ratio

    Divide 162 in the ratio 2:1:3

    Answer: 54, 27 and 81
  5. 5. Statistics

    Calculate the mean of: 14, 30, 23, 13, 14, 21, 14. Give your answer to 2 decimal places

    Answer: 18.43