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Cornerstone May 23 - 29 25 questions
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Monday 23 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄12 + 1⁄12

    Answer: 1⁄3
  2. 2. Algebra

    Solve: 6x - 18 = 6

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Divide 243 in the ratio 1:4:4

    Answer: 27, 108 and 108
  5. 5. Statistics

    Calculate the mean of: 50, 47, 23, 10, 29, 26, 40. Give your answer to 2 decimal places

    Answer: 32.14

Tuesday 24 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄8 + 2⁄8

    Answer: 3⁄8
  2. 2. Algebra

    Solve: 3x - 18 = 24

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Share 57 in the ratio 1:2

    Answer: 19 and 38
  5. 5. Statistics

    Find the mean of: 11, 2, 16, 11, 20

    Answer: 12

Wednesday 25 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 7⁄8 + 1⁄5

    Answer: 43⁄40
  2. 2. Algebra

    Solve: 4x + 10 = 22

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 15.3cm
  4. 4. Ratio

    Share 84 in the ratio 1:2

    Answer: 28 and 56
  5. 5. Statistics

    Calculate the mean of: 35, 31, 39, 47, 40, 48, 27, 38. Give your answer to 2 decimal places

    Answer: 38.13

Thursday 26 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 2x + 12 = 24

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 66 in the ratio 1:2

    Answer: 22 and 44
  5. 5. Statistics

    Calculate the mean of: 28, 49, 10, 50, 40, 16. Give your answer to 2 decimal places

    Answer: 32.17

Friday 27 May 2011

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 1⁄8

    Answer: 5⁄8
  2. 2. Algebra

    Solve: 2x - 9 = 15

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 13.04cm
  4. 4. Ratio

    Share 112 in the ratio 3:4

    Answer: 48 and 64
  5. 5. Statistics

    Find the mean of: 14, 18, 5, 16, 7

    Answer: 12