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Cornerstone May 24 - 30 25 questions
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Monday 24 May 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 5⁄6

    Answer: 37⁄30
  2. 2. Algebra

    Solve: 6x - 19 = 11

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Share 60 in the ratio 4:1

    Answer: 48 and 12
  5. 5. Statistics

    Find the mean of: 17, 12, 7

    Answer: 12

Tuesday 25 May 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 2x + 11 = 27

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 9.22cm
  4. 4. Ratio

    Share 15 in the ratio 1:2

    Answer: 5 and 10
  5. 5. Statistics

    Calculate the mean of: 12, 16, 39, 7, 5, 42, 40

    Answer: 23

Wednesday 26 May 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄8 + 1⁄4

    Answer: 3⁄8
  2. 2. Algebra

    Solve: 7x + 5 = 40

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 95 in the ratio 1:4

    Answer: 19 and 76
  5. 5. Statistics

    Calculate the mean of: 10, 43, 31, 31, 45, 43, 20, 27

    Answer: 31.25

Thursday 27 May 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 8x - 6 = 114

    Answer: x = 15
  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

    Share 75 in the ratio 3:2

    Answer: 45 and 30
  5. 5. Statistics

    Find the mean of: 11, 2, 4, 15

    Answer: 8

Friday 28 May 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 8x - 15 = 57

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 19.21cm
  4. 4. Ratio

    Share 114 in the ratio 1:2

    Answer: 38 and 76
  5. 5. Statistics

    Find the mean of: 13, 18, 13, 8

    Answer: 13