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Cornerstone Oct 26 - Nov 1 25 questions
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Monday 26 October 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 4⁄7

    Answer: 34⁄35
  2. 2. Algebra

    Solve: 2x - 12 = -2

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 144 in the ratio 4:2:3

    Answer: 64, 32 and 48
  5. 5. Statistics

    Find the mean of: 11, 6, 2, 13

    Answer: 8

Tuesday 27 October 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 6⁄10 + 1⁄10

    Answer: 7⁄10
  2. 2. Algebra

    Solve: 7x + 14 = 98

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 4cm

    Answer: 8.06cm
  4. 4. Ratio

    Divide 125 in the ratio 1:1:3

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

    Calculate the mean of: 14, 46, 45, 46, 34, 46, 5

    Answer: 33.7

Wednesday 28 October 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄8 + 3⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 6x + 7 = 25

    Answer: x = 3
  3. 3. Geometry

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

    Answer: 8.49cm
  4. 4. Ratio

    Divide 126 in the ratio 2:1:3

    Answer: 42, 21 and 63
  5. 5. Statistics

    Calculate the mean of: 5, 28, 17, 50, 19, 19, 34, 21

    Answer: 24.1

Thursday 29 October 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄6 + 2⁄3

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 5x - 7 = 23

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 156 in the ratio 1:4:1

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

    Find the mean of: 10, 14, 19

    Answer: 14.333333333333

Friday 30 October 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄7 + 2⁄3

    Answer: 23⁄21
  2. 2. Algebra

    Solve: 2x - 15 = 13

    Answer: x = 14
  3. 3. Geometry

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

    Answer: 9.22cm
  4. 4. Ratio

    Divide 176 in the ratio 2:3:3

    Answer: 44, 66 and 66
  5. 5. Statistics

    Find the mean of: 11, 8, 3, 17, 16

    Answer: 11