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Cornerstone Dec 18 - 24 25 questions
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Monday 18 December 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 3⁄6 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 2x + 5 = 23

    Answer: x = 9
  3. 3. Geometry

    Find the hypotenuse of a right triangle with sides 6cm and 8cm

    Answer: 10cm
  4. 4. Ratio

    Divide 140 in the ratio 1:4:2

    Answer: 20, 80 and 40
  5. 5. Statistics

    Find the mean of: 9, 25, 4, 15, 7

    Answer: 12

Tuesday 19 December 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 3⁄4 + 4⁄8

    Answer: 5⁄4
  2. 2. Algebra

    Solve: 8x - 13 = 27

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 6cm and b = 15cm. Give your answer to 2 decimal places

    Answer: 16.16cm
  4. 4. Ratio

    Divide 147 in the ratio 1:2:4

    Answer: 21, 42 and 84
  5. 5. Statistics

    Calculate the mean of: 43, 7, 23, 7, 32, 34, 11, 29

    Answer: 23.25

Wednesday 20 December 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄10 + 1⁄10

    Answer: 3⁄5
  2. 2. Algebra

    Solve: 5x - 14 = 46

    Answer: x = 12
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Divide 150 in the ratio 3:1:1

    Answer: 90, 30 and 30
  5. 5. Statistics

    Find the mean of: 13, 19, 2, 14

    Answer: 12

Thursday 21 December 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 4⁄8 + 2⁄6

    Answer: 5⁄6
  2. 2. Algebra

    Solve: 5x + 14 = 49

    Answer: x = 7
  3. 3. Geometry

    Calculate the hypotenuse when a = 8cm and b = 13cm. Give your answer to 2 decimal places

    Answer: 15.26cm
  4. 4. Ratio

    Divide 250 in the ratio 2:1:2

    Answer: 100, 50 and 100
  5. 5. Statistics

    Calculate the mean of: 49, 32, 5, 45, 39, 8, 38, 23. Give your answer to 2 decimal places

    Answer: 29.88

Friday 22 December 2017

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 2x + 8 = 18

    Answer: x = 5
  3. 3. Geometry

    Calculate the hypotenuse when a = 12cm and b = 8cm. Give your answer to 2 decimal places

    Answer: 14.42cm
  4. 4. Ratio

    Divide 78 in the ratio 2:1:3

    Answer: 26, 13 and 39
  5. 5. Statistics

    Calculate the mean of: 39, 29, 46, 18, 49, 6, 14. Give your answer to 2 decimal places

    Answer: 28.71