Change pack
Cornerstone Dec 27 - Jan 2 25 questions
PDF (questions) PDF (answers)

Monday 27 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄3 + 3⁄5

    Answer: 14⁄15
  2. 2. Algebra

    Solve: 2x - 11 = 1

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 10cm
  4. 4. Ratio

    Divide 210 in the ratio 3:3:4

    Answer: 63, 63 and 84
  5. 5. Statistics

    Calculate the mean of: 39, 13, 24, 37, 39, 36

    Answer: 31.3

Tuesday 28 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 1⁄5 + 5⁄6

    Answer: 31⁄30
  2. 2. Algebra

    Solve: 7x - 20 = 29

    Answer: x = 7
  3. 3. Geometry

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

    Answer: 39cm
  4. 4. Ratio

    Divide 133 in the ratio 3:2:2

    Answer: 57, 38 and 38
  5. 5. Statistics

    Calculate the mean of: 25, 49, 19, 25, 35, 28

    Answer: 30.2

Wednesday 29 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 1⁄8 + 6⁄8

    Answer: 7⁄8
  2. 2. Algebra

    Solve: 3x + 15 = 48

    Answer: x = 11
  3. 3. Geometry

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

    Answer: 10.82cm
  4. 4. Ratio

    Divide 126 in the ratio 2:3:4

    Answer: 28, 42 and 56
  5. 5. Statistics

    Find the mean of: 18, 2, 6, 20, 5

    Answer: 10.2

Thursday 30 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 5⁄8 + 1⁄8

    Answer: 3⁄4
  2. 2. Algebra

    Solve: 7x + 12 = 40

    Answer: x = 4
  3. 3. Geometry

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

    Answer: 20cm
  4. 4. Ratio

    Divide 168 in the ratio 3:2:1

    Answer: 84, 56 and 28
  5. 5. Statistics

    Find the mean of: 5, 17, 14, 17, 8

    Answer: 12.2

Friday 31 December 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄6 + 3⁄4

    Answer: 19⁄12
  2. 2. Algebra

    Solve: 4x - 16 = 20

    Answer: x = 9
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 15cm

    Answer: 16.55cm
  4. 4. Ratio

    Divide 207 in the ratio 2:3:4

    Answer: 46, 69 and 92
  5. 5. Statistics

    Calculate the mean of: 14, 43, 43, 20, 14, 42, 29

    Answer: 29.3