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Cornerstone Jul 19 - 25 25 questions
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Monday 19 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 2⁄3

    Answer: 3⁄2
  2. 2. Algebra

    Solve: 4x + 7 = 23

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 9cm

    Answer: 15cm
  4. 4. Ratio

    Divide 243 in the ratio 3:4:2

    Answer: 81, 108 and 54
  5. 5. Statistics

    Find the mean of: 14, 3, 19

    Answer: 12

Tuesday 20 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄12 + 1⁄12

    Answer: 1⁄4
  2. 2. Algebra

    Solve: 5x + 11 = 66

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Divide 80 in the ratio 1:1:3

    Answer: 16, 16 and 48
  5. 5. Statistics

    Calculate the mean of: 23, 48, 33, 15, 25, 47, 36, 23

    Answer: 31.25

Wednesday 21 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 3⁄4

    Answer: 11⁄8
  2. 2. Algebra

    Solve: 4x - 14 = 38

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 11cm. Give your answer to 2 decimal places

    Answer: 12.53cm
  4. 4. Ratio

    Divide 80 in the ratio 1:4:3

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

    Find the mean of: 3, 3, 1, 13

    Answer: 5

Thursday 22 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄12 + 1⁄12

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 5x - 18 = 22

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 35cm

    Answer: 37cm
  4. 4. Ratio

    Divide 66 in the ratio 1:4:1

    Answer: 11, 44 and 11
  5. 5. Statistics

    Find the mean of: 16, 18, 10, 6, 10

    Answer: 12

Friday 23 July 2010

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 5⁄6

    Answer: 31⁄30
  2. 2. Algebra

    Solve: 4x + 11 = 39

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 6cm. Give your answer to 2 decimal places

    Answer: 7.21cm
  4. 4. Ratio

    Divide 208 in the ratio 4:1:3

    Answer: 104, 26 and 78
  5. 5. Statistics

    Calculate the mean of: 41, 28, 42, 27, 14, 47. Give your answer to 2 decimal places

    Answer: 33.17