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Cornerstone Sep 9 - 15 25 questions
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Monday 9 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄9 + 5⁄9

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 2x + 6 = 20

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 12.81cm
  4. 4. Ratio

    Share 112 in the ratio 4:3

    Answer: 64 and 48
  5. 5. Statistics

    Calculate the mean of: 31, 50, 36, 28, 20, 5, 9. Give your answer to 2 decimal places

    Answer: 25.57

Tuesday 10 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: 7x + 5 = 26

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio

    Share 35 in the ratio 1:4

    Answer: 7 and 28
  5. 5. Statistics

    Calculate the mean of: 33, 16, 27, 47, 24, 6, 9. Give your answer to 2 decimal places

    Answer: 23.14

Wednesday 11 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 3⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 2x - 17 = -1

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 18 in the ratio 2:1

    Answer: 12 and 6
  5. 5. Statistics

    Find the mean of: 14, 8, 13, 3, 7

    Answer: 9

Thursday 12 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄6 + 1⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 4x - 13 = 19

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 7.21cm
  4. 4. Ratio

    Share 63 in the ratio 4:3

    Answer: 36 and 27
  5. 5. Statistics

    Find the mean of: 10, 25, 9, 8, 8

    Answer: 12

Friday 13 September 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 3⁄5

    Answer: 11⁄10
  2. 2. Algebra

    Solve: 5x + 7 = 57

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 30 in the ratio 2:1

    Answer: 20 and 10
  5. 5. Statistics

    Calculate the mean of: 37, 24, 13, 18, 17, 40, 31, 31. Give your answer to 2 decimal places

    Answer: 26.38