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Cornerstone May 25 - 31 25 questions
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Monday 25 May 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄11 + 1⁄11

    Answer: 7⁄11
  2. 2. Algebra

    Solve: 8x - 7 = 57

    Answer: x = 8
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 13cm

    Answer: 17.03cm
  4. 4. Ratio

    Divide 216 in the ratio 4:2:3

    Answer: 96, 48 and 72
  5. 5. Statistics

    Calculate the mean of: 14, 36, 15, 30, 40, 30

    Answer: 27.5

Tuesday 26 May 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 2⁄6

    Answer: 11⁄15
  2. 2. Algebra

    Solve: 2x - 6 = 20

    Answer: x = 13
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 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: 11, 17, 31, 41, 50, 5, 24

    Answer: 25.6

Wednesday 27 May 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄8 + 1⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 4x + 12 = 60

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 12cm

    Answer: 12.37cm
  4. 4. Ratio

    Divide 70 in the ratio 1:3:1

    Answer: 14, 42 and 14
  5. 5. Statistics

    Find the mean of: 3, 3, 17

    Answer: 7.6666666666667

Thursday 28 May 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 7⁄12 + 4⁄12

    Answer: 11⁄12
  2. 2. Algebra

    Solve: 2x + 14 = 36

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 8cm

    Answer: 10.63cm
  4. 4. Ratio

    Divide 156 in the ratio 1:3:2

    Answer: 26, 78 and 52
  5. 5. Statistics

    Find the mean of: 3, 17, 7, 19, 19

    Answer: 13

Friday 29 May 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 3⁄7

    Answer: 33⁄28
  2. 2. Algebra

    Solve: 2x - 12 = 0

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 37cm
  4. 4. Ratio

    Divide 125 in the ratio 1:1:3

    Answer: 25, 25 and 75
  5. 5. Statistics

    Calculate the mean of: 14, 10, 33, 42, 18, 16, 32, 42

    Answer: 25.9