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Cornerstone Jan 1 - 7 25 questions
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Monday 18 March 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 71 + 71

    Answer: 71 + 71 = 142
  2. 2. Algebra

    Factorise: 32x + 20

    Answer: 4(8x + 5)
  3. 3. Geometry

    Opposite = 12cm, hypotenuse = 17cm. Find the angle

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

    Simplify: 12:4:12

    Answer: 3:1:3
  5. 5. Statistics

    Calculate the mean of: 9, 24, 31, 35, 7, 45, 38

    Answer: 27

Tuesday 19 March 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: x3 × x4

    Answer: x7
  2. 2. Algebra

    Solve: 8x = 72

    Answer: x = 9
  3. 3. Geometry

    Opposite = 19cm, adjacent = 16cm. Calculate the angle

    Answer: 49.9°
  4. 4. Ratio

    Simplify: 16:8:12

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

    Find the mean of: 8, 12, 7

    Answer: 9

Wednesday 20 March 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 39 + 21

    Answer: 39 + 21 = 60
  2. 2. Algebra

    What is the next term? 5, 15, 45, 135, ...

    Answer: 405
  3. 3. Geometry

    Find the distance between (1, 3) and (6, 8)

    Answer: 7.07
  4. 4. Ratio

    Simplify: 9:9:15

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

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

    Answer: 310

Thursday 21 March 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Simplify: x3 × x4

    Answer: x7
  2. 2. Algebra

    Factorise: 21x + 12

    Answer: 3(7x + 4)
  3. 3. Geometry

    Calculate perimeter: two sides are 7cm and 7cm at right angles

    Answer: 23.9cm
  4. 4. Ratio

    Simplify: 18:18:12

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

    Find the range of: 26, 20, 35, 37, 21

    Answer: 17

Friday 22 March 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 18 + 28

    Answer: 38
  2. 2. Algebra

    Solve: x + 13 = 16

    Answer: x = 3
  3. 3. Geometry

    Opposite = 14cm, hypotenuse = 28cm. Find the angle

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

    Simplify: 18:9:18

    Answer: 2:1:2
  5. 5. Statistics

    Find the mean of: 10, 8, 10, 10, 2

    Answer: 8