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Cornerstone Dec 10 - 16 25 questions
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Monday 10 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 4x - 15 = 37

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 12.37cm
  4. 4. Ratio

    Divide 115 in the ratio 1:2:2

    Answer: 23, 46 and 46
  5. 5. Statistics

    Find the mean of: 8, 19, 20, 18, 5

    Answer: 14

Tuesday 11 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 4⁄6

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 2x + 7 = 17

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Divide 132 in the ratio 3:4:4

    Answer: 36, 48 and 48
  5. 5. Statistics

    Calculate the mean of: 5, 48, 43, 42, 32, 9, 27, 20

    Answer: 28.25

Wednesday 12 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 3⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 6x + 6 = 42

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 9.22cm
  4. 4. Ratio

    Divide 112 in the ratio 1:1:2

    Answer: 28, 28 and 56
  5. 5. Statistics

    Calculate the mean of: 6, 39, 39, 43, 26, 6, 33, 29. Give your answer to 2 decimal places

    Answer: 27.63

Thursday 13 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄6 + 3⁄8

    Answer: 25⁄24
  2. 2. Algebra

    Solve: 3x - 7 = 20

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 216 in the ratio 4:3:1

    Answer: 108, 81 and 27
  5. 5. Statistics

    Find the mean of: 9, 3, 16, 17, 25

    Answer: 14

Friday 14 December 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄8 + 3⁄7

    Answer: 45⁄56
  2. 2. Algebra

    Solve: 3x - 7 = 35

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 13.34cm
  4. 4. Ratio

    Share 65 in the ratio 2:3

    Answer: 26 and 39
  5. 5. Statistics

    Calculate the mean of: 29, 16, 34, 32, 12, 6, 24, 50. Give your answer to 2 decimal places

    Answer: 25.38