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Cornerstone Jan 21 - 27 25 questions
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Monday 21 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 4⁄5

    Answer: 31⁄20
  2. 2. Algebra

    Solve: 2x - 14 = 6

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 5cm
  4. 4. Ratio

    Divide 126 in the ratio 2:4:1

    Answer: 36, 72 and 18
  5. 5. Statistics

    Find the mean of: 6, 3, 25, 6

    Answer: 10

Tuesday 22 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄10 + 1⁄10

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 6x - 10 = 62

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 7cm. Give your answer to 2 decimal places

    Answer: 8.06cm
  4. 4. Ratio

    Divide 100 in the ratio 2:2:1

    Answer: 40, 40 and 20
  5. 5. Statistics

    Find the mean of: 18, 11, 16

    Answer: 15

Wednesday 23 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄8 + 1⁄3

    Answer: 11⁄24
  2. 2. Algebra

    Solve: 6x + 14 = 68

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 96 in the ratio 1:2:1

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

    Calculate the mean of: 47, 15, 39, 29, 28, 36. Give your answer to 2 decimal places

    Answer: 32.33

Thursday 24 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄7 + 3⁄4

    Answer: 41⁄28
  2. 2. Algebra

    Solve: 6x + 8 = 68

    Answer: x = 10
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 45 in the ratio 2:1

    Answer: 30 and 15
  5. 5. Statistics

    Find the mean of: 7, 14, 11, 12

    Answer: 11

Friday 25 January 2013

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄8 + 2⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 2x - 16 = 10

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 14cm. Give your answer to 2 decimal places

    Answer: 14.32cm
  4. 4. Ratio

    Share 36 in the ratio 2:1

    Answer: 24 and 12
  5. 5. Statistics

    Calculate the mean of: 50, 27, 26, 26, 35, 40, 49. Give your answer to 2 decimal places

    Answer: 36.14