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Cornerstone Dec 19 - 25 25 questions
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Monday 19 December 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄9 + 4⁄9

    Answer: 7⁄9
  2. 2. Algebra

    Solve: 5x + 11 = 36

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 11.7cm
  4. 4. Ratio

    Divide 150 in the ratio 1:4:1

    Answer: 25, 100 and 25
  5. 5. Statistics

    Calculate the mean of: 41, 41, 40, 41, 5, 43, 6, 9

    Answer: 28.25

Tuesday 20 December 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 3⁄4

    Answer: 37⁄28
  2. 2. Algebra

    Solve: 4x + 5 = 25

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 189 in the ratio 2:1:4

    Answer: 54, 27 and 108
  5. 5. Statistics

    Find the mean of: 9, 21, 12

    Answer: 14

Wednesday 21 December 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄6 + 3⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 2x - 15 = -3

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 11.4cm
  4. 4. Ratio

    Divide 112 in the ratio 2:3:2

    Answer: 32, 48 and 32
  5. 5. Statistics

    Calculate the mean of: 31, 18, 50, 47, 38, 40, 42

    Answer: 38

Thursday 22 December 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 1⁄3

    Answer: 16⁄21
  2. 2. Algebra

    Solve: 6x - 20 = 28

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 65 in the ratio 1:1:3

    Answer: 13, 13 and 39
  5. 5. Statistics

    Calculate the mean of: 44, 41, 49, 34, 47, 38, 37, 21. Give your answer to 2 decimal places

    Answer: 38.88

Friday 23 December 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 2x + 10 = 18

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 8.94cm
  4. 4. Ratio

    Divide 75 in the ratio 1:3:1

    Answer: 15, 45 and 15
  5. 5. Statistics

    Find the mean of: 20, 12, 23, 14, 6

    Answer: 15