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Cornerstone May 9 - 15 25 questions
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Monday 9 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄5 + 2⁄5

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 3x - 6 = 9

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 11cm and b = 12cm

    Answer: 16.28cm
  4. 4. Ratio

    Share 42 in the ratio 2:1

    Answer: 28 and 14
  5. 5. Statistics

    Calculate the mean of: 27, 19, 37, 17, 33, 11

    Answer: 24

Tuesday 10 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄12 + 8⁄12

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 8x - 17 = 31

    Answer: x = 6
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 3cm and 4cm

    Answer: 5cm
  4. 4. Ratio

    Share 80 in the ratio 3:2

    Answer: 48 and 32
  5. 5. Statistics

    Calculate the mean of: 10, 18, 6, 20, 18, 31

    Answer: 17.2

Wednesday 11 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 2⁄6

    Answer: 2⁄3
  2. 2. Algebra

    Solve: 3x + 10 = 19

    Answer: x = 3
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 14cm

    Answer: 16.12cm
  4. 4. Ratio

    Share 49 in the ratio 3:4

    Answer: 21 and 28
  5. 5. Statistics

    Find the mean of: 11, 18, 8

    Answer: 12.333333333333

Thursday 12 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄12 + 5⁄12

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 5x + 3 = 28

    Answer: x = 5
  3. 3. Geometry

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

    Answer: 17cm
  4. 4. Ratio

    Share 48 in the ratio 1:2

    Answer: 16 and 32
  5. 5. Statistics

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

    Answer: 11.4

Friday 13 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄6 + 2⁄3

    Answer: 4⁄3
  2. 2. Algebra

    Solve: 8x - 8 = 88

    Answer: x = 12
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 6cm

    Answer: 13.42cm
  4. 4. Ratio

    Divide 132 in the ratio 4:1:1

    Answer: 88, 22 and 22
  5. 5. Statistics

    Calculate the mean of: 21, 38, 17, 26, 28, 37

    Answer: 27.8