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Cornerstone Jan 1 - 7 25 questions
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Monday 20 February 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 66 + 61

    Answer: 66 + 61 = 127
  2. 2. Algebra

    Expand: 2(4x + 2)

    Answer: 8x + 4
  3. 3. Geometry

    Find the distance between (2, 1) and (7, 6)

    Answer: 7.07
  4. 4. Ratio

    Calculate 50% of 36

    Answer: 18
  5. 5. Statistics

    A bag has 6 red and 4 blue balls. What is the probability of picking a red ball?

    Answer: 35

Tuesday 21 February 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 710 + 720

    Answer: 710 + 720 = 1430
  2. 2. Algebra

    Simplify: 4x + 8x

    Answer: 12x
  3. 3. Geometry

    Calculate the hypotenuse when a = 7cm and b = 12cm

    Answer: 13.89cm
  4. 4. Ratio

    Calculate 10% of 42

    Answer: 4.2
  5. 5. Statistics

    Find the mean of: 17, 12, 6, 18, 10

    Answer: 12.6

Wednesday 22 February 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 99 + 65

    Answer: 99 + 65 = 164
  2. 2. Algebra

    Find the next term: 15, 17, 19, 21, ...

    Answer: 23
  3. 3. Geometry

    Opposite = 5cm, hypotenuse = 7.cm. Find the angle

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

    Simplify the ratio 12:8

    Answer: 3:2
  5. 5. Statistics

    Find the range of: 18, 25, 21, 8, 14

    Answer: 17

Thursday 23 February 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 626 + 134

    Answer: 626 + 134 = 760
  2. 2. Algebra

    Solve: 6x = 78

    Answer: x = 13
  3. 3. Geometry

    Opposite = 13cm, adjacent = 16cm. Calculate the angle

    Answer: 39.1°
  4. 4. Ratio

    Simplify the ratio 10:15

    Answer: 2:3
  5. 5. Statistics

    Calculate the mean of: 5, 24, 41, 50, 6, 26, 11, 18

    Answer: 22.6

Friday 24 February 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 334 + 903

    Answer: 334 + 903 = 1237
  2. 2. Algebra

    What is the next term? 6, 24, 96, 384, ...

    Answer: 1536
  3. 3. Geometry

    Opposite = 16cm, adjacent = 13cm. Calculate the angle

    Answer: 50.9°
  4. 4. Ratio

    Simplify: 4:4:6

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

    Find the range of: 14, 15, 25, 21, 11

    Answer: 14