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Cornerstone Mar 12 - 18 25 questions
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Monday 12 March 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 1⁄5

    Answer: 13⁄15
  2. 2. Algebra

    Solve: 5x - 11 = 44

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 24 in the ratio 2:1

    Answer: 16 and 8
  5. 5. Statistics

    Calculate the mean of: 28, 12, 17, 17, 42, 15, 21, 15. Give your answer to 2 decimal places

    Answer: 20.88

Tuesday 13 March 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 3x + 13 = 43

    Answer: x = 10
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.55cm
  4. 4. Ratio

    Share 68 in the ratio 3:1

    Answer: 51 and 17
  5. 5. Statistics

    Find the mean of: 10, 16, 8, 11, 15

    Answer: 12

Wednesday 14 March 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄10 + 1⁄10

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 3x + 12 = 30

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 9cm. Give your answer to 2 decimal places

    Answer: 9.49cm
  4. 4. Ratio

    Divide 161 in the ratio 1:4:2

    Answer: 23, 92 and 46
  5. 5. Statistics

    Calculate the mean of: 17, 35, 22, 37, 28, 42, 37, 8

    Answer: 28.25

Thursday 15 March 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄6 + 2⁄7

    Answer: 11⁄14
  2. 2. Algebra

    Solve: 7x - 17 = 18

    Answer: x = 5
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Divide 154 in the ratio 2:1:4

    Answer: 44, 22 and 88
  5. 5. Statistics

    Find the mean of: 25, 10, 4, 3, 18

    Answer: 12

Friday 16 March 2012

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄6 + 1⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 2x - 8 = 20

    Answer: x = 14
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.26cm
  4. 4. Ratio

    Divide 80 in the ratio 3:1:4

    Answer: 30, 10 and 40
  5. 5. Statistics

    Find the mean of: 8, 10, 20, 10

    Answer: 12