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Cornerstone Jan 1 - 7 25 questions
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Monday 24 June 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 611 + 311

    Answer: 911
  2. 2. Algebra

    Solve: 4x = 52

    Answer: x = 13
  3. 3. Geometry

    Find the area of a circle with radius 6cm

    Answer: 113.cm²
  4. 4. Ratio

    Calculate 10% of 104

    Answer: 10.4
  5. 5. Statistics

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

    Answer: 12

Tuesday 25 June 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 85 + ? = 176

    Answer: 91
  2. 2. Algebra

    Factorise: 12x + 8

    Answer: 4(3x + 2)
  3. 3. Geometry

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

    Answer: 59°
  4. 4. Ratio

    Simplify the ratio 18:6

    Answer: 3:1
  5. 5. Statistics

    Find the mean of: 3, 2, 5

    Answer: 3.3333333333333

Wednesday 26 June 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 93 + 31

    Answer: 93 + 31 = 124
  2. 2. Algebra

    Solve: x + 7 = 13

    Answer: x = 6
  3. 3. Geometry

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

    Answer: 30cm
  4. 4. Ratio

    Simplify the ratio 24:9

    Answer: 8:3
  5. 5. Statistics

    What is the probability of rolling a 5 on a fair die?

    Answer: 16

Thursday 27 June 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    29000

    Answer: 2.9 × 104
  2. 2. Algebra

    What is the next term? 8, 32, 128, 512, ...

    Answer: 2048
  3. 3. Geometry

    Calculate the area of a circle with diameter 19cm

    Answer: 283.53cm²
  4. 4. Ratio

    Simplify the ratio 18:15

    Answer: 6:5
  5. 5. Statistics

    Calculate the mean of: 17, 22, 38, 24, 39, 18, 25

    Answer: 26.1

Friday 28 June 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 119 + 854

    Answer: 119 + 854 = 973
  2. 2. Algebra

    Factorise: 2x² + 6x

    Answer: 2x(x + 3)
  3. 3. Geometry

    Calculate the hypotenuse when a = 4cm and b = 13cm

    Answer: 13.6cm
  4. 4. Ratio

    Simplify the ratio 4:10

    Answer: 2:5
  5. 5. Statistics

    Calculate the mean of: 9, 19, 36, 32, 32, 29, 21

    Answer: 25.4