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Cornerstone Jan 1 - 7 25 questions
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Monday 6 February 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 63 + 35

    Answer: 63 + 35 = 98
  2. 2. Algebra

    Solve: 5x + 4 = 4x + 7

    Answer: x = 3
  3. 3. Geometry

    Opposite = 20cm, adjacent = 15cm. Calculate the angle

    Answer: 53.1°
  4. 4. Ratio

    Find 33% of 314

    Answer: 103.62
  5. 5. Statistics

    What is the probability of rolling a 2 on a fair die?

    Answer: 16

Tuesday 7 February 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 858 + 276

    Answer: 858 + 276 = 1134
  2. 2. Algebra

    Solve: 7x = 21

    Answer: x = 3
  3. 3. Geometry

    Find the distance between (2, 5) and (5, 9)

    Answer: 5
  4. 4. Ratio

    Simplify: 8:4:12

    Answer: 2:1:3
  5. 5. Statistics

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

    Answer: 310

Wednesday 8 February 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 77 + ? = 174

    Answer: 97
  2. 2. Algebra

    Expand: 3(2x + 9)

    Answer: 6x + 27
  3. 3. Geometry

    Find the distance between (5, 5) and (11, 11)

    Answer: 8.49
  4. 4. Ratio

    Simplify: 18:9:18

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

    Calculate the mean of: 50, 20, 26, 15, 17, 15, 36, 34

    Answer: 26.6

Thursday 9 February 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 68 + 37

    Answer: 68 + 37 = 105
  2. 2. Algebra

    Simplify: 9x + 7x

    Answer: 16x
  3. 3. Geometry

    Calculate the area of a circle with diameter 20cm

    Answer: 314.16cm²
  4. 4. Ratio

    Simplify: 12:4:4

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

    Find the mean of: 16, 7, 3, 16

    Answer: 10.5

Friday 10 February 2023

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 35 + 15

    Answer: 45
  2. 2. Algebra

    Solve: 4x + 5 = x + 26

    Answer: x = 7
  3. 3. Geometry

    Opposite = 11cm, hypotenuse = 15.6cm. Find the angle

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

    Simplify: 8:10:8

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

    Find the range of: 42, 15, 45, 23, 20

    Answer: 30