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Cornerstone May 16 - 22 25 questions
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Monday 16 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 2⁄4 + 3⁄7

    Answer: 13⁄14
  2. 2. Algebra

    Solve: 7x + 15 = 64

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 11cm

    Answer: 13.04cm
  4. 4. Ratio

    Divide 66 in the ratio 1:3:2

    Answer: 11, 33 and 22
  5. 5. Statistics

    Calculate the mean of: 6, 36, 47, 44, 21, 39, 33, 49

    Answer: 34.4

Tuesday 17 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄6 + 4⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 2x - 19 = -1

    Answer: x = 9
  3. 3. Geometry

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

    Answer: 25cm
  4. 4. Ratio

    Divide 208 in the ratio 3:3:2

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

    Find the mean of: 19, 10, 2

    Answer: 10.333333333333

Wednesday 18 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄12 + 1⁄12

    Answer: 1⁄6
  2. 2. Algebra

    Solve: 7x - 8 = 76

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 10.63cm
  4. 4. Ratio

    Divide 80 in the ratio 1:2:1

    Answer: 20, 40 and 20
  5. 5. Statistics

    Find the mean of: 12, 19, 17

    Answer: 16

Thursday 19 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄7 + 2⁄8

    Answer: 11⁄28
  2. 2. Algebra

    Solve: 5x + 11 = 46

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 12cm

    Answer: 14.42cm
  4. 4. Ratio

    Divide 198 in the ratio 4:4:3

    Answer: 72, 72 and 54
  5. 5. Statistics

    Calculate the mean of: 45, 44, 37, 27, 34, 46, 23

    Answer: 36.6

Friday 20 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 4⁄8 + 1⁄8

    Answer: 5⁄8
  2. 2. Algebra

    Solve: 4x + 5 = 21

    Answer: x = 4
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 9cm and 40cm

    Answer: 41cm
  4. 4. Ratio

    Divide 161 in the ratio 1:4:2

    Answer: 23, 92 and 46
  5. 5. Statistics

    Find the mean of: 4, 15, 20, 6, 10

    Answer: 11