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Cornerstone Aug 20 - 26 25 questions
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Monday 20 August 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 3⁄4

    Answer: 11⁄8
  2. 2. Algebra

    Solve: 2x + 15 = 29

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 15.56cm
  4. 4. Ratio

    Share 39 in the ratio 1:2

    Answer: 13 and 26
  5. 5. Statistics

    Find the mean of: 16, 2, 8, 11, 8

    Answer: 9

Tuesday 21 August 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄6 + 1⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 7x - 10 = 60

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Share 42 in the ratio 4:3

    Answer: 24 and 18
  5. 5. Statistics

    Calculate the mean of: 11, 15, 28, 50, 12, 16

    Answer: 22

Wednesday 22 August 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 6⁄7

    Answer: 44⁄35
  2. 2. Algebra

    Solve: 5x - 18 = 42

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.6cm
  4. 4. Ratio

    Share 25 in the ratio 4:1

    Answer: 20 and 5
  5. 5. Statistics

    Calculate the mean of: 47, 30, 19, 8, 7, 45, 47, 40. Give your answer to 2 decimal places

    Answer: 30.38

Thursday 23 August 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 9⁄12 + 1⁄12

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 7x + 13 = 97

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Share 76 in the ratio 3:1

    Answer: 57 and 19
  5. 5. Statistics

    Find the mean of: 5, 18, 19

    Answer: 14

Friday 24 August 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄10 + 3⁄10

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 5x + 3 = 18

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Divide 240 in the ratio 1:2:1

    Answer: 60, 120 and 60
  5. 5. Statistics

    Calculate the mean of: 43, 11, 16, 10, 18, 26, 15, 24. Give your answer to 2 decimal places

    Answer: 20.38