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Cornerstone May 20 - 26 25 questions
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Monday 20 May 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 1⁄3

    Answer: 13⁄12
  2. 2. Algebra

    Solve: 7x - 9 = 40

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Share 35 in the ratio 1:4

    Answer: 7 and 28
  5. 5. Statistics

    Find the mean of: 7, 17, 20, 6, 10

    Answer: 12

Tuesday 21 May 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄6 + 3⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 2x + 13 = 31

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 13.42cm
  4. 4. Ratio

    Share 45 in the ratio 2:1

    Answer: 30 and 15
  5. 5. Statistics

    Calculate the mean of: 43, 35, 19, 40, 11, 19, 9, 16

    Answer: 24

Wednesday 22 May 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄6 + 2⁄4

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 2x + 9 = 29

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 20cm
  4. 4. Ratio

    Share 102 in the ratio 1:2

    Answer: 34 and 68
  5. 5. Statistics

    Calculate the mean of: 35, 23, 28, 41, 22, 6, 39. Give your answer to 2 decimal places

    Answer: 27.71

Thursday 23 May 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄12 + 1⁄12

    Answer: 5⁄12
  2. 2. Algebra

    Solve: 3x - 18 = 0

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 17.69cm
  4. 4. Ratio

    Share 75 in the ratio 2:3

    Answer: 30 and 45
  5. 5. Statistics

    Find the mean of: 3, 16, 19, 14, 13

    Answer: 13

Friday 24 May 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 2⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 7x - 8 = 48

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 18.44cm
  4. 4. Ratio

    Divide 135 in the ratio 3:4:2

    Answer: 45, 60 and 30
  5. 5. Statistics

    Calculate the mean of: 6, 27, 17, 25, 48, 46, 22, 35

    Answer: 28.25