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Cornerstone Mar 21 - 27 25 questions
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Monday 21 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 4⁄7

    Answer: 27⁄35
  2. 2. Algebra

    Solve: 4x - 12 = 20

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 12cm

    Answer: 15cm
  4. 4. Ratio

    Share 30 in the ratio 1:2

    Answer: 10 and 20
  5. 5. Statistics

    Calculate the mean of: 19, 20, 28, 11, 11, 48, 44. Give your answer to 2 decimal places

    Answer: 25.86

Tuesday 22 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄8 + 3⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 5x - 9 = 26

    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

    Share 55 in the ratio 4:1

    Answer: 44 and 11
  5. 5. Statistics

    Calculate the mean of: 25, 34, 13, 15, 32, 43, 42. Give your answer to 2 decimal places

    Answer: 29.14

Wednesday 23 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 1⁄3

    Answer: 16⁄21
  2. 2. Algebra

    Solve: 3x + 13 = 28

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Share 54 in the ratio 1:2

    Answer: 18 and 36
  5. 5. Statistics

    Find the mean of: 16, 22, 7

    Answer: 15

Thursday 24 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄8 + 1⁄3

    Answer: 11⁄24
  2. 2. Algebra

    Solve: 3x + 6 = 27

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Divide 210 in the ratio 4:2:1

    Answer: 120, 60 and 30
  5. 5. Statistics

    Calculate the mean of: 23, 32, 5, 41, 11, 8, 45. Give your answer to 2 decimal places

    Answer: 23.57

Friday 25 March 2016

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄10 + 2⁄10

    Answer: 2⁄5
  2. 2. Algebra

    Solve: 6x - 10 = 26

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 10cm. Give your answer to 2 decimal places

    Answer: 10.77cm
  4. 4. Ratio

    Divide 198 in the ratio 4:1:4

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

    Find the mean of: 6, 14, 19

    Answer: 13