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Cornerstone Sep 10 - 16 25 questions
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Monday 10 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 1⁄4

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 3x + 10 = 34

    Answer: x = 8
  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

    Share 85 in the ratio 3:2

    Answer: 51 and 34
  5. 5. Statistics

    Calculate the mean of: 19, 38, 44, 34, 50, 26. Give your answer to 2 decimal places

    Answer: 35.17

Tuesday 11 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 3x - 16 = -4

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 36cm

    Answer: 39cm
  4. 4. Ratio

    Share 85 in the ratio 2:3

    Answer: 34 and 51
  5. 5. Statistics

    Find the mean of: 6, 9, 21

    Answer: 12

Wednesday 12 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 1⁄3

    Answer: 7⁄12
  2. 2. Algebra

    Solve: 3x - 8 = 22

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio

    Share 85 in the ratio 1:4

    Answer: 17 and 68
  5. 5. Statistics

    Find the mean of: 9, 2, 7, 22

    Answer: 10

Thursday 13 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 3x + 6 = 15

    Answer: x = 3
  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

    Share 76 in the ratio 1:3

    Answer: 19 and 57
  5. 5. Statistics

    Calculate the mean of: 10, 18, 41, 45, 14, 7, 11. Give your answer to 2 decimal places

    Answer: 20.86

Friday 14 September 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄10 + 4⁄10

    Answer: 9⁄10
  2. 2. Algebra

    Solve: 6x + 5 = 29

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 270 in the ratio 2:2:1

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

    Find the mean of: 12, 18, 8, 9, 18

    Answer: 13