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Cornerstone Jan 10 - 16 25 questions
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Monday 10 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 2⁄3

    Answer: 17⁄12
  2. 2. Algebra

    Solve: 3x + 4 = 22

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 13cm

    Answer: 15.26cm
  4. 4. Ratio

    Divide 110 in the ratio 1:3:1

    Answer: 22, 66 and 22
  5. 5. Statistics

    Find the mean of: 5, 4, 10

    Answer: 6.3333333333333

Tuesday 11 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄7 + 1⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 5x - 7 = 43

    Answer: x = 10
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 5cm and 12cm

    Answer: 13cm
  4. 4. Ratio

    Divide 135 in the ratio 1:4:4

    Answer: 15, 60 and 60
  5. 5. Statistics

    Calculate the mean of: 49, 29, 25, 9, 27, 11, 48, 29

    Answer: 28.4

Wednesday 12 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 1⁄8

    Answer: 5⁄8
  2. 2. Algebra

    Solve: 5x - 19 = 11

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 5cm

    Answer: 7.81cm
  4. 4. Ratio

    Divide 112 in the ratio 1:2:1

    Answer: 28, 56 and 28
  5. 5. Statistics

    Calculate the mean of: 12, 21, 15, 19, 33, 41, 47

    Answer: 26.9

Thursday 13 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄11 + 6⁄11

    Answer: 7⁄11
  2. 2. Algebra

    Solve: 5x + 4 = 59

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Divide 144 in the ratio 4:2:3

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

    Find the mean of: 14, 5, 14, 12

    Answer: 11.25

Friday 14 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄11 + 8⁄11

    Answer: 9⁄11
  2. 2. Algebra

    Solve: 3x + 5 = 29

    Answer: x = 8
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 7cm and 24cm

    Answer: 25cm
  4. 4. Ratio

    Share 60 in the ratio 1:2

    Answer: 20 and 40
  5. 5. Statistics

    Calculate the mean of: 35, 35, 50, 24, 43, 26, 5

    Answer: 31.1