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Cornerstone Jul 25 - 31 25 questions
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Monday 25 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 1⁄4

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 6x - 12 = 42

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 12cm

    Answer: 15cm
  4. 4. Ratio

    Share 51 in the ratio 1:2

    Answer: 17 and 34
  5. 5. Statistics

    Calculate the mean of: 28, 44, 13, 17, 15, 17, 13

    Answer: 21

Tuesday 26 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄9 + 1⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 8x - 11 = 37

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 13.45cm
  4. 4. Ratio

    Share 45 in the ratio 1:2

    Answer: 15 and 30
  5. 5. Statistics

    Calculate the mean of: 46, 7, 19, 25, 43, 31, 45, 40

    Answer: 32

Wednesday 27 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 2⁄3

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 2x + 15 = 39

    Answer: x = 12
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 20cm and 21cm

    Answer: 29cm
  4. 4. Ratio

    Share 40 in the ratio 1:4

    Answer: 8 and 32
  5. 5. Statistics

    Find the mean of: 20, 3, 8, 17

    Answer: 12

Thursday 28 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 2⁄7

    Answer: 51⁄56
  2. 2. Algebra

    Solve: 5x + 11 = 56

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.32cm
  4. 4. Ratio

    Share 66 in the ratio 2:1

    Answer: 44 and 22
  5. 5. Statistics

    Find the mean of: 20, 18, 15, 16, 6

    Answer: 15

Friday 29 July 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄12 + 5⁄12

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 3x - 6 = 18

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 14.21cm
  4. 4. Ratio

    Share 70 in the ratio 1:4

    Answer: 14 and 56
  5. 5. Statistics

    Calculate the mean of: 30, 10, 43, 46, 33, 8, 42. Give your answer to 2 decimal places

    Answer: 30.29