Change pack
Cornerstone Jan 1 - 7 25 questions
PDF (questions) PDF (answers)

Monday 12 December 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 99 + 76

    Answer: 99 + 76 = 175
  2. 2. Algebra

    Factorise: 9x² + 2x

    Answer: x(9x + 2)
  3. 3. Geometry

    Opposite = 12cm, adjacent = 11cm. Calculate the angle

    Answer: 47.5°
  4. 4. Ratio

    Simplify: 12:6:10

    Answer: 6:3:5
  5. 5. Statistics

    A bag has 4 red and 4 blue balls. What is the probability of picking a red ball?

    Answer: 12

Tuesday 13 December 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 399 + 952

    Answer: 399 + 952 = 1351
  2. 2. Algebra

    Find the next term: 23, 32, 41, 50, ...

    Answer: 59
  3. 3. Geometry

    Find the area of a circle with radius 7cm

    Answer: 153.94cm²
  4. 4. Ratio

    Find 46% of 173

    Answer: 79.58
  5. 5. Statistics

    Find the mean of: 14, 9, 17, 2, 8

    Answer: 10

Wednesday 14 December 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 18 + 37

    Answer: 3156
  2. 2. Algebra

    Solve: x + 5 = 11

    Answer: x = 6
  3. 3. Geometry

    Find the area of a circle with radius 4cm

    Answer: 50.27cm²
  4. 4. Ratio

    Simplify the ratio 8:20

    Answer: 2:5
  5. 5. Statistics

    Calculate the mean of: 14, 48, 42, 26, 30, 22, 39

    Answer: 31.6

Thursday 15 December 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 49 + 63

    Answer: 49 + 63 = 112
  2. 2. Algebra

    Collect like terms: 3x + 8y + 6x + 6y

    Answer: 9x + 14y
  3. 3. Geometry

    Calculate the area of a right triangle with perpendicular sides 8cm and 12cm

    Answer: 48cm²
  4. 4. Ratio

    Calculate 50% of 189

    Answer: 94.5
  5. 5. Statistics

    What is the probability of getting heads when flipping a fair coin?

    Answer: 12

Friday 16 December 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 318 + 286

    Answer: 318 + 286 = 604
  2. 2. Algebra

    Collect like terms: 7x + 4y + 6x + 6y

    Answer: 13x + 10y
  3. 3. Geometry

    Opposite = 9cm, hypotenuse = 12.7cm. Find the angle

    Answer: 45° (approximately)
  4. 4. Ratio

    Calculate 10% of 197

    Answer: 19.7
  5. 5. Statistics

    Find the range of: 13, 10, 22, 9, 18

    Answer: 13