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Cornerstone Oct 18 - 24 25 questions
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Monday 18 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄5 + 1⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 6x + 12 = 72

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio

    Divide 200 in the ratio 1:1:2

    Answer: 50, 50 and 100
  5. 5. Statistics

    Find the mean of: 12, 13, 18, 9

    Answer: 13

Tuesday 19 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 4⁄8

    Answer: 5⁄4
  2. 2. Algebra

    Solve: 3x - 12 = 6

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 90 in the ratio 3:4:2

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

    Calculate the mean of: 11, 39, 14, 41, 9, 45

    Answer: 26.5

Wednesday 20 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄7 + 4⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 2x - 6 = 4

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 17.69cm
  4. 4. Ratio

    Divide 180 in the ratio 4:3:3

    Answer: 72, 54 and 54
  5. 5. Statistics

    Find the mean of: 6, 15, 15

    Answer: 12

Thursday 21 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 4⁄5

    Answer: 21⁄20
  2. 2. Algebra

    Solve: 4x + 3 = 27

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Divide 184 in the ratio 3:1:4

    Answer: 69, 23 and 92
  5. 5. Statistics

    Calculate the mean of: 19, 40, 29, 41, 6, 41, 44, 35. Give your answer to 2 decimal places

    Answer: 31.88

Friday 22 October 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄12 + 5⁄12

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 5x + 4 = 54

    Answer: x = 10
  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 70 in the ratio 4:2:1

    Answer: 40, 20 and 10
  5. 5. Statistics

    Calculate the mean of: 25, 46, 7, 44, 10, 21, 42, 30. Give your answer to 2 decimal places

    Answer: 28.13