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Cornerstone Mar 7 - 13 25 questions
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Monday 7 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 8⁄11 + 2⁄11

    Answer: 10⁄11
  2. 2. Algebra

    Solve: 5x + 5 = 20

    Answer: x = 3
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 8cm and 15cm

    Answer: 17cm
  4. 4. Ratio

    Divide 70 in the ratio 3:1:1

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

    Calculate the mean of: 8, 45, 22, 11, 33, 39, 46, 22

    Answer: 28.3

Tuesday 8 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 4x + 12 = 48

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 13cm
  4. 4. Ratio

    Divide 52 in the ratio 1:1:2

    Answer: 13, 13 and 26
  5. 5. Statistics

    Calculate the mean of: 19, 39, 32, 17, 27, 28, 39, 36

    Answer: 29.6

Wednesday 9 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄5 + 3⁄8

    Answer: 31⁄40
  2. 2. Algebra

    Solve: 7x - 13 = 29

    Answer: x = 6
  3. 3. Geometry

    Calculate the hypotenuse when a = 10cm and b = 9cm

    Answer: 13.45cm
  4. 4. Ratio

    Divide 174 in the ratio 1:2:3

    Answer: 29, 58 and 87
  5. 5. Statistics

    Find the mean of: 10, 7, 8, 11

    Answer: 9

Thursday 10 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄3 + 2⁄4

    Answer: 7⁄6
  2. 2. Algebra

    Solve: 7x - 7 = 42

    Answer: x = 7
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 12cm and 16cm

    Answer: 20cm
  4. 4. Ratio

    Divide 96 in the ratio 1:2:1

    Answer: 24, 48 and 24
  5. 5. Statistics

    Find the mean of: 9, 12, 19

    Answer: 13.333333333333

Friday 11 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 3⁄5

    Answer: 4⁄5
  2. 2. Algebra

    Solve: 5x + 3 = 48

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 9cm and b = 6cm

    Answer: 10.82cm
  4. 4. Ratio

    Divide 161 in the ratio 3:2:2

    Answer: 69, 46 and 46
  5. 5. Statistics

    Calculate the mean of: 37, 49, 5, 25, 29, 43, 41, 34

    Answer: 32.9