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Cornerstone Dec 22 - 28 25 questions
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Monday 22 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 1⁄3

    Answer: 16⁄21
  2. 2. Algebra

    Solve: 2x + 12 = 20

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 12.21cm
  4. 4. Ratio

    Share 45 in the ratio 3:2

    Answer: 27 and 18
  5. 5. Statistics

    Find the mean of: 15, 7, 13, 5

    Answer: 10

Tuesday 23 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄9 + 2⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 5x - 11 = 24

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Share 42 in the ratio 2:1

    Answer: 28 and 14
  5. 5. Statistics

    Calculate the mean of: 16, 36, 41, 42, 48, 11, 31, 36. Give your answer to 2 decimal places

    Answer: 32.63

Wednesday 24 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄7 + 1⁄7

    Answer: 5⁄7
  2. 2. Algebra

    Solve: 2x - 6 = 16

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 92 in the ratio 1:2:1

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

    Find the mean of: 14, 15, 17, 19, 10

    Answer: 15

Thursday 25 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 2⁄6

    Answer: 13⁄12
  2. 2. Algebra

    Solve: 3x + 11 = 23

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 175 in the ratio 2:4:1

    Answer: 50, 100 and 25
  5. 5. Statistics

    Calculate the mean of: 17, 47, 41, 11, 25, 48

    Answer: 31.5

Friday 26 December 2014

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄8 + 2⁄8

    Answer: 1⁄2
  2. 2. Algebra

    Solve: 5x + 10 = 40

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Divide 207 in the ratio 2:3:4

    Answer: 46, 69 and 92
  5. 5. Statistics

    Calculate the mean of: 6, 19, 21, 13, 46, 22, 40, 39

    Answer: 25.75