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Cornerstone Nov 18 - 24 25 questions
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Monday 18 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 3⁄4

    Answer: 13⁄12
  2. 2. Algebra

    Solve: 8x - 6 = 26

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Divide 66 in the ratio 2:1:3

    Answer: 22, 11 and 33
  5. 5. Statistics

    Calculate the mean of: 47, 42, 48, 43, 26, 21. Give your answer to 2 decimal places

    Answer: 37.83

Tuesday 19 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄12 + 4⁄12

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 7x + 3 = 87

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 13.6cm
  4. 4. Ratio

    Divide 140 in the ratio 3:1:3

    Answer: 60, 20 and 60
  5. 5. Statistics

    Find the mean of: 20, 8, 8

    Answer: 12

Wednesday 20 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 2⁄3

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 5x + 8 = 58

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 15cm and 20cm

    Answer: 25cm
  4. 4. Ratio

    Divide 108 in the ratio 2:3:4

    Answer: 24, 36 and 48
  5. 5. Statistics

    Calculate the mean of: 31, 23, 12, 34, 44, 29, 24, 49

    Answer: 30.75

Thursday 21 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄12 + 8⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 7x - 19 = 9

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.16cm
  4. 4. Ratio

    Divide 168 in the ratio 1:4:1

    Answer: 28, 112 and 28
  5. 5. Statistics

    Find the mean of: 4, 4, 17, 23

    Answer: 12

Friday 22 November 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄8 + 6⁄7

    Answer: 19⁄14
  2. 2. Algebra

    Solve: 2x - 16 = 6

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 240 in the ratio 2:1:1

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

    Find the mean of: 3, 8, 4

    Answer: 5