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Cornerstone Jan 1 - 7 25 questions
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Monday 22 November 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Find the total of 243, 256, and 80

    Answer: 579
  2. 2. Algebra

    Solve: x + 13 = 29

    Answer: x = 16
  3. 3. Geometry

    Opposite = 14cm, adjacent = 12cm. Calculate the angle

    Answer: 49.4°
  4. 4. Ratio

    Simplify the ratio 20:8

    Answer: 5:2
  5. 5. Statistics

    A bag has 5 red and 6 blue balls. What is the probability of picking a red ball?

    Answer: 511

Tuesday 23 November 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 27 + 88

    Answer: 27 + 88 = 115
  2. 2. Algebra

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

    Answer: 11x + 9y
  3. 3. Geometry

    Opposite = 13cm, hypotenuse = 15cm. Find the angle

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

    Calculate 50% of 66

    Answer: 33
  5. 5. Statistics

    Find the mean of: 5, 10, 8, 13, 4

    Answer: 8

Wednesday 24 November 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 67 + 50

    Answer: 67 + 50 = 117
  2. 2. Algebra

    Solve: 8x = 40

    Answer: x = 5
  3. 3. Geometry

    Find the perimeter of a right triangle with sides 6cm, 8cm, 10cm

    Answer: 24cm
  4. 4. Ratio

    Find 66% of 280

    Answer: 184.8
  5. 5. Statistics

    Calculate the mean of: 10, 49, 21, 10, 14, 41

    Answer: 24.2

Thursday 25 November 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 934 + 550

    Answer: 934 + 550 = 1484
  2. 2. Algebra

    Find the next term: 10, 20, 30, 40, ...

    Answer: 50
  3. 3. Geometry

    Calculate the area of a circle with diameter 20cm

    Answer: 314.16cm²
  4. 4. Ratio

    Find 50% of 71

    Answer: 35.5
  5. 5. Statistics

    Find the mean of: 19, 4, 10

    Answer: 11

Friday 26 November 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: -8 + (-2)

    Answer: -10
  2. 2. Algebra

    Solve: x + 10 = 18

    Answer: x = 8
  3. 3. Geometry

    Opposite = 12cm, hypotenuse = 24cm. Find the angle

    Answer: 30° (approximately)
  4. 4. Ratio

    Simplify: 6:4:8

    Answer: 3:2:4
  5. 5. Statistics

    Find the mean of: 13, 5, 7

    Answer: 8.3333333333333