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Cornerstone Jul 23 - 29 25 questions
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Monday 23 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄7 + 5⁄8

    Answer: 67⁄56
  2. 2. Algebra

    Solve: 3x + 7 = 25

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Share 133 in the ratio 4:3

    Answer: 76 and 57
  5. 5. Statistics

    Find the mean of: 18, 3, 6

    Answer: 9

Tuesday 24 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 1⁄7

    Answer: 25⁄28
  2. 2. Algebra

    Solve: 2x + 9 = 17

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 29cm
  4. 4. Ratio

    Divide 133 in the ratio 1:2:4

    Answer: 19, 38 and 76
  5. 5. Statistics

    Calculate the mean of: 17, 33, 18, 38, 29, 10, 27. Give your answer to 2 decimal places

    Answer: 24.57

Wednesday 25 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 3x - 6 = 30

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 6.4cm
  4. 4. Ratio

    Divide 48 in the ratio 1:1:2

    Answer: 12, 12 and 24
  5. 5. Statistics

    Find the mean of: 20, 13, 7, 16

    Answer: 14

Thursday 26 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄6 + 4⁄8

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 3x - 12 = 24

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 130 in the ratio 1:1:3

    Answer: 26, 26 and 78
  5. 5. Statistics

    Find the mean of: 8, 5, 14

    Answer: 9

Friday 27 July 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 10⁄12 + 1⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 4x + 10 = 22

    Answer: x = 3
  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

    Divide 119 in the ratio 4:2:1

    Answer: 68, 34 and 17
  5. 5. Statistics

    Calculate the mean of: 34, 19, 42, 33, 20, 23

    Answer: 28.5