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Cornerstone Jan 1 - 7 25 questions
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Monday 4 March 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 21 + 78

    Answer: 21 + 78 = 99
  2. 2. Algebra

    Solve: 3x = 15

    Answer: x = 5
  3. 3. Geometry

    Opposite = 17cm, adjacent = 8cm. Calculate the angle

    Answer: 64.8°
  4. 4. Ratio

    Simplify the ratio 15:6

    Answer: 5:2
  5. 5. Statistics

    Calculate the mean of: 41, 30, 10, 22, 37, 20

    Answer: 26.7

Tuesday 5 March 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 85 + ? = 111

    Answer: 26
  2. 2. Algebra

    Solve: x + 7 = 26

    Answer: x = 19
  3. 3. Geometry

    Find the area of a right triangle with base 8cm and height 9cm

    Answer: 36cm²
  4. 4. Ratio

    Simplify the ratio 20:28

    Answer: 5:7
  5. 5. Statistics

    What is the probability of rolling a 4 on a fair die?

    Answer: 16

Wednesday 6 March 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 44 + 94

    Answer: 44 + 94 = 138
  2. 2. Algebra

    Solve: x + 12 = 30

    Answer: x = 18
  3. 3. Geometry

    Calculate the area of a circle with diameter 8cm

    Answer: 50.27cm²
  4. 4. Ratio

    Calculate 50% of 91

    Answer: 45.5
  5. 5. Statistics

    Find the mean of: 7, 18, 11, 8

    Answer: 11

Thursday 7 March 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 623 + 353

    Answer: 623 + 353 = 976
  2. 2. Algebra

    What is the next term? 4, 8, 16, 32, ...

    Answer: 64
  3. 3. Geometry

    Opposite = 14cm, hypotenuse = 19.8cm. Find the angle

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

    Calculate 10% of 49

    Answer: 4.9
  5. 5. Statistics

    A bag has 8 red and 7 blue balls. What is the probability of picking a red ball?

    Answer: 815

Friday 8 March 2024

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    63000000

    Answer: 6.3 × 107
  2. 2. Algebra

    Collect like terms: 8x + 4y + 4x + 5y

    Answer: 12x + 9y
  3. 3. Geometry

    Opposite = 8cm, hypotenuse = 11.3cm. Find the angle

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

    Calculate 50% of 183

    Answer: 91.5
  5. 5. Statistics

    Calculate the mean of: 7, 34, 50, 48, 48, 44, 32, 33

    Answer: 37