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Cornerstone Jan 1 - 7 25 questions
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Monday 13 January 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 10 + 3

    Answer: 13
  2. 2. Algebra

    Collect like terms: 5x + 8y + 3x + 6y

    Answer: 8x + 14y
  3. 3. Geometry

    Find the area of a circle with radius 9cm

    Answer: 254.47cm²
  4. 4. Ratio

    Calculate 50% of 105

    Answer: 52.5
  5. 5. Statistics

    Find the mean of: 6, 4, 2, 5

    Answer: 4.25

Tuesday 14 January 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 20 + 39

    Answer: 20 + 39 = 59
  2. 2. Algebra

    Solve: 8x = 72

    Answer: x = 9
  3. 3. Geometry

    Find the distance between (2, 2) and (6, 6)

    Answer: 5.66
  4. 4. Ratio

    Find 46% of 162

    Answer: 74.52
  5. 5. Statistics

    Calculate the range of: 82, 35, 42, 67, 82, 47

    Answer: 47

Wednesday 15 January 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 93 + ? = 139

    Answer: 46
  2. 2. Algebra

    Simplify: 9x + 5x

    Answer: 14x
  3. 3. Geometry

    Calculate the distance between (10, 3) and (13, 7)

    Answer: 5
  4. 4. Ratio

    Find 43% of 350

    Answer: 150.5
  5. 5. Statistics

    Find the range of: 8, 14, 11, 19, 16

    Answer: 11

Thursday 16 January 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 59 + 49

    Answer: 59 + 49 = 108
  2. 2. Algebra

    Simplify: 9x + 5x

    Answer: 14x
  3. 3. Geometry

    Opposite = 5cm, hypotenuse = 5.8cm. Find the angle

    Answer: 60° (approximately)
  4. 4. Ratio

    Find 35% of 485

    Answer: 169.75
  5. 5. Statistics

    Find the mean of: 19, 17, 13

    Answer: 16.333333333333

Friday 17 January 2025

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 5⁄8 + 2⁄3

    Answer: 31⁄24
  2. 2. Algebra

    Solve: 2x = 20

    Answer: x = 10
  3. 3. Geometry

    Opposite = 13cm, adjacent = 10cm. Calculate the angle

    Answer: 52.4°
  4. 4. Ratio

    Find 60% of 469

    Answer: 281.4
  5. 5. Statistics

    Calculate the mean of: 31, 10, 35, 7, 22, 27, 19, 9

    Answer: 20