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Cornerstone Sep 23 - 29 25 questions
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Monday 23 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 3⁄4

    Answer: 37⁄28
  2. 2. Algebra

    Solve: 7x - 9 = 40

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Divide 147 in the ratio 4:2:1

    Answer: 84, 42 and 21
  5. 5. Statistics

    Find the mean of: 12, 8, 17, 15

    Answer: 13

Tuesday 24 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 4⁄6

    Answer: 4⁄3
  2. 2. Algebra

    Solve: 4x - 13 = 19

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Share 68 in the ratio 3:1

    Answer: 51 and 17
  5. 5. Statistics

    Calculate the mean of: 32, 38, 12, 26, 48, 16, 39. Give your answer to 2 decimal places

    Answer: 30.14

Wednesday 25 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄7 + 3⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 4x + 14 = 50

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 16.97cm
  4. 4. Ratio

    Share 45 in the ratio 4:1

    Answer: 36 and 9
  5. 5. Statistics

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

    Answer: 10

Thursday 26 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 3⁄6

    Answer: 13⁄14
  2. 2. Algebra

    Solve: 4x + 8 = 52

    Answer: x = 11
  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

    Share 80 in the ratio 2:3

    Answer: 32 and 48
  5. 5. Statistics

    Find the mean of: 20, 17, 6, 9, 23

    Answer: 15

Friday 27 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄9 + 1⁄9

    Answer: 4⁄9
  2. 2. Algebra

    Solve: 6x - 9 = 69

    Answer: x = 13
  3. 3. Geometry

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

    Answer: 14.21cm
  4. 4. Ratio

    Share 51 in the ratio 2:1

    Answer: 34 and 17
  5. 5. Statistics

    Calculate the mean of: 10, 22, 32, 35, 11, 35, 14. Give your answer to 2 decimal places

    Answer: 22.71