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Cornerstone Jan 1 - 7 25 questions
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Monday 23 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 87 + ? = 123

    Answer: 36
  2. 2. Algebra

    Solve: x + 2 = 15

    Answer: x = 13
  3. 3. Geometry

    Calculate the hypotenuse when a = 3cm and b = 12cm

    Answer: 12.37cm
  4. 4. Ratio

    Simplify the ratio 30:40

    Answer: 3:4
  5. 5. Statistics

    Find the mean of: 4, 17, 12

    Answer: 11

Tuesday 24 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is 3.2 + 5.35 + 0.48?

    Answer: 3.2 + 5.35 + 0.48 = 9.03
  2. 2. Algebra

    Simplify: 2x + 3x

    Answer: 5x
  3. 3. Geometry

    Opposite = 8cm, adjacent = 10cm. Calculate the angle

    Answer: 38.7°
  4. 4. Ratio

    Find 25% of 453

    Answer: 113.25
  5. 5. Statistics

    A bag has 8 red and 4 blue balls. What is the probability of picking a red ball?

    Answer: 23

Wednesday 25 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 37 + 90

    Answer: 37 + 90 = 127
  2. 2. Algebra

    Expand: 6(6x + 2)

    Answer: 36x + 12
  3. 3. Geometry

    Find the perimeter of a right triangle with sides 5cm and 12cm

    Answer: 30cm
  4. 4. Ratio

    Simplify: 18:15:12

    Answer: 6:5:4
  5. 5. Statistics

    Find the mean of: 7, 9, 18, 6

    Answer: 10

Thursday 26 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 548 + 523

    Answer: 548 + 523 = 1071
  2. 2. Algebra

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

    Answer: 8x + 10y
  3. 3. Geometry

    Opposite = 15cm, adjacent = 9cm. Calculate the angle

    Answer: 59°
  4. 4. Ratio

    Simplify: 10:6:10

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

    Find the mean of: 16, 10, 14, 10, 16

    Answer: 13.2

Friday 27 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 50 + 82

    Answer: 50 + 82 = 132
  2. 2. Algebra

    Simplify: 7x + 9x

    Answer: 16x
  3. 3. Geometry

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

    Answer: 24cm
  4. 4. Ratio

    Simplify: 24:8:20

    Answer: 6:2:5
  5. 5. Statistics

    Calculate the mean of: 13, 39, 5, 9, 14, 15, 28

    Answer: 17.6