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Cornerstone Feb 18 - 24 25 questions
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Monday 18 February 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 6⁄8 + 2⁄7

    Answer: 29⁄28
  2. 2. Algebra

    Solve: 7x + 3 = 38

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Divide 189 in the ratio 2:1:4

    Answer: 54, 27 and 108
  5. 5. Statistics

    Find the mean of: 15, 5, 14

    Answer: 11.333333333333

Tuesday 19 February 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 5x - 5 = 30

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 7cm

    Answer: 9.22cm
  4. 4. Ratio

    Divide 243 in the ratio 3:4:2

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

    Calculate the mean of: 17, 43, 32, 39, 50, 7

    Answer: 31.3

Wednesday 20 February 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄4 + 4⁄6

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 4x - 11 = 45

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 15cm
  4. 4. Ratio

    Divide 190 in the ratio 3:3:4

    Answer: 57, 57 and 76
  5. 5. Statistics

    Find the mean of: 18, 2, 9, 6

    Answer: 8.75

Thursday 21 February 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 2⁄11 + 1⁄11

    Answer: 3⁄11
  2. 2. Algebra

    Solve: 6x + 10 = 34

    Answer: x = 4
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 8cm

    Answer: 12.04cm
  4. 4. Ratio

    Divide 156 in the ratio 1:4:1

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

    Calculate the mean of: 42, 41, 13, 32, 23, 42

    Answer: 32.2

Friday 22 February 2019

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 1⁄3

    Answer: 23⁄24
  2. 2. Algebra

    Solve: 2x + 12 = 28

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 168 in the ratio 1:4:3

    Answer: 21, 84 and 63
  5. 5. Statistics

    Calculate the mean of: 25, 41, 18, 43, 48, 38

    Answer: 35.5