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Cornerstone Jan 2 - 8 25 questions
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Monday 2 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄6 + 1⁄6

    Answer: 1⁄3
  2. 2. Algebra

    Solve: 7x - 17 = 32

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 4cm. Give your answer to 2 decimal places

    Answer: 6.4cm
  4. 4. Ratio

    Divide 95 in the ratio 2:1:2

    Answer: 38, 19 and 38
  5. 5. Statistics

    Calculate the mean of: 49, 15, 42, 25, 32, 40, 38. Give your answer to 2 decimal places

    Answer: 34.43

Tuesday 3 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄8 + 4⁄5

    Answer: 13⁄10
  2. 2. Algebra

    Solve: 3x + 6 = 42

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 190 in the ratio 4:3:3

    Answer: 76, 57 and 57
  5. 5. Statistics

    Find the mean of: 3, 19, 12, 11, 20

    Answer: 13

Wednesday 4 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 7⁄8 + 2⁄3

    Answer: 37⁄24
  2. 2. Algebra

    Solve: 6x + 7 = 79

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 20cm
  4. 4. Ratio

    Share 112 in the ratio 3:4

    Answer: 48 and 64
  5. 5. Statistics

    Calculate the mean of: 41, 23, 41, 32, 40, 22, 36. Give your answer to 2 decimal places

    Answer: 33.57

Thursday 5 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄9 + 2⁄9

    Answer: 5⁄9
  2. 2. Algebra

    Solve: 8x - 17 = 95

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 12.65cm
  4. 4. Ratio

    Share 100 in the ratio 2:3

    Answer: 40 and 60
  5. 5. Statistics

    Find the mean of: 3, 20, 20, 10, 12

    Answer: 13

Friday 6 January 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 1⁄8

    Answer: 11⁄24
  2. 2. Algebra

    Solve: 3x - 15 = 21

    Answer: x = 12
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Share 80 in the ratio 4:1

    Answer: 64 and 16
  5. 5. Statistics

    Find the mean of: 10, 5, 18

    Answer: 11