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Cornerstone Dec 2 - 8 25 questions
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Monday 2 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄11 + 2⁄11

    Answer: 9⁄11
  2. 2. Algebra

    Solve: 8x - 7 = 49

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 12cm. Give your answer to 2 decimal places

    Answer: 12.65cm
  4. 4. Ratio

    Share 51 in the ratio 2:1

    Answer: 34 and 17
  5. 5. Statistics

    Calculate the mean of: 7, 8, 11, 27, 12, 18, 36, 10. Give your answer to 2 decimal places

    Answer: 16.13

Tuesday 3 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 3⁄6

    Answer: 9⁄8
  2. 2. Algebra

    Solve: 3x + 6 = 27

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Share 33 in the ratio 2:1

    Answer: 22 and 11
  5. 5. Statistics

    Find the mean of: 14, 6, 7, 25

    Answer: 13

Wednesday 4 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄8 + 3⁄4

    Answer: 9⁄8
  2. 2. Algebra

    Solve: 5x + 6 = 66

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 108 in the ratio 1:1:2

    Answer: 27, 27 and 54
  5. 5. Statistics

    Calculate the mean of: 23, 11, 21, 12, 13, 40

    Answer: 20

Thursday 5 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄5 + 1⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 4x - 13 = 15

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 13.42cm
  4. 4. Ratio

    Divide 175 in the ratio 1:4:2

    Answer: 25, 100 and 50
  5. 5. Statistics

    Find the mean of: 21, 6, 8, 2, 18

    Answer: 11

Friday 6 December 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 2⁄3

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 4x - 20 = 32

    Answer: x = 13
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Divide 120 in the ratio 1:2:2

    Answer: 24, 48 and 48
  5. 5. Statistics

    Find the mean of: 15, 6, 15

    Answer: 12