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Cornerstone Mar 21 - 27 25 questions
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Monday 21 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄11 + 6⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 3x - 18 = 18

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 8.49cm
  4. 4. Ratio

    Share 126 in the ratio 4:3

    Answer: 72 and 54
  5. 5. Statistics

    Find the mean of: 6, 4, 17, 18

    Answer: 11.25

Tuesday 22 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 3⁄8

    Answer: 17⁄24
  2. 2. Algebra

    Solve: 8x - 16 = 24

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Share 55 in the ratio 2:3

    Answer: 22 and 33
  5. 5. Statistics

    Find the mean of: 9, 13, 19, 7, 8

    Answer: 11.2

Wednesday 23 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄9 + 7⁄9

    Answer: 8⁄9
  2. 2. Algebra

    Solve: 2x + 12 = 34

    Answer: x = 11
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 10cm

    Answer: 10.77cm
  4. 4. Ratio

    Share 75 in the ratio 2:3

    Answer: 30 and 45
  5. 5. Statistics

    Calculate the mean of: 17, 30, 7, 15, 26, 15

    Answer: 18.3

Thursday 24 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄7 + 2⁄7

    Answer: 6⁄7
  2. 2. Algebra

    Solve: 6x + 3 = 57

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 4cm

    Answer: 10.77cm
  4. 4. Ratio

    Divide 135 in the ratio 3:1:1

    Answer: 81, 27 and 27
  5. 5. Statistics

    Find the mean of: 15, 4, 6, 20

    Answer: 11.25

Friday 25 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 3⁄4

    Answer: 23⁄20
  2. 2. Algebra

    Solve: 8x - 14 = 90

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 5cm and b = 11cm

    Answer: 12.08cm
  4. 4. Ratio

    Divide 232 in the ratio 1:1:2

    Answer: 58, 58 and 116
  5. 5. Statistics

    Calculate the mean of: 42, 5, 49, 18, 30, 38, 17

    Answer: 28.4