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Cornerstone Jan 1 - 7 25 questions
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Monday 16 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Add: 35 + 36

    Answer: 1110
  2. 2. Algebra

    Solve: x + 15 = 24

    Answer: x = 9
  3. 3. Geometry

    Opposite = 16cm, adjacent = 10cm. Calculate the angle

    Answer: 58°
  4. 4. Ratio

    Simplify the ratio 9:21

    Answer: 3:7
  5. 5. Statistics

    Calculate the range of: 116, 50, 121, 70, 87, 62

    Answer: 71

Tuesday 17 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    2000

    Answer: 2 × 103
  2. 2. Algebra

    Solve: 9x = 99

    Answer: x = 11
  3. 3. Geometry

    Find the area of a right triangle with base 12cm and height 4cm

    Answer: 24cm²
  4. 4. Ratio

    Simplify the ratio 30:25

    Answer: 6:5
  5. 5. Statistics

    Find the range of: 28, 27, 25, 16, 13

    Answer: 15

Wednesday 18 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    300000

    Answer: 3 × 105
  2. 2. Algebra

    Collect like terms: 8x + 7y + 6x + 6y

    Answer: 14x + 13y
  3. 3. Geometry

    Find the area of a right triangle with base 11cm and height 7cm

    Answer: 38.5cm²
  4. 4. Ratio

    Simplify the ratio 35:40

    Answer: 7:8
  5. 5. Statistics

    Find the range of: 22, 19, 11, 28, 11

    Answer: 17

Thursday 19 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 94 + ? = 192

    Answer: 98
  2. 2. Algebra

    Simplify: 2x + 2x

    Answer: 4x
  3. 3. Geometry

    Calculate the area of a circle with diameter 9cm

    Answer: 63.62cm²
  4. 4. Ratio

    Simplify the ratio 12:6

    Answer: 2:1
  5. 5. Statistics

    A bag has 4 red and 7 blue balls. What is the probability of picking a red ball?

    Answer: 411

Friday 20 May 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 710 + 210

    Answer: 910
  2. 2. Algebra

    Simplify: 6x + 6x

    Answer: 12x
  3. 3. Geometry

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

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

    Calculate 50% of 136

    Answer: 68
  5. 5. Statistics

    Find the mean of: 8, 7, 10, 10

    Answer: 8.75