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Cornerstone Jan 1 - 7 25 questions
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Monday 14 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 52 + 68

    Answer: 52 + 68 = 120
  2. 2. Algebra

    Solve: 4x = 52

    Answer: x = 13
  3. 3. Geometry

    Opposite = 8cm, adjacent = 9cm. Calculate the angle

    Answer: 41.6°
  4. 4. Ratio

    Simplify: 12:6:10

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

    A bag has 7 red and 3 blue balls. What is the probability of picking a red ball?

    Answer: 710

Tuesday 15 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 550 + 741

    Answer: 550 + 741 = 1291
  2. 2. Algebra

    Solve: x + 5 = 13

    Answer: x = 8
  3. 3. Geometry

    Find the area of a circle with radius 10cm

    Answer: 314.16cm²
  4. 4. Ratio

    Simplify: 12:15:12

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

    Find the mean of: 4, 14, 12, 16, 12

    Answer: 11.6

Wednesday 16 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 512 + 512

    Answer: 56
  2. 2. Algebra

    Solve: x + 7 = 15

    Answer: x = 8
  3. 3. Geometry

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

    Answer: 45°
  4. 4. Ratio

    Simplify: 20:24:24

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

    What is the probability of rolling a 3 on a fair die?

    Answer: 16

Thursday 17 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Find the total of 146, 192, and 56

    Answer: 394
  2. 2. Algebra

    Solve: 9x = 36

    Answer: x = 4
  3. 3. Geometry

    Find the area of a circle with radius 10cm

    Answer: 314.16cm²
  4. 4. Ratio

    Find 59% of 168

    Answer: 99.12
  5. 5. Statistics

    A bag has 5 red and 8 blue balls. What is the probability of picking a red ball?

    Answer: 513

Friday 18 March 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 33 + ? = 104

    Answer: 71
  2. 2. Algebra

    Solve: 6x = 66

    Answer: x = 11
  3. 3. Geometry

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

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

    Find 77% of 122

    Answer: 93.94
  5. 5. Statistics

    Calculate the mean of: 25, 12, 43, 18, 37, 31, 18, 43

    Answer: 28.4