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Lintel Jan 1 - 7 25 questions
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Monday 17 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 121 + 251

    Answer: 121 + 251 = 372
  2. 2. Algebra

    Factorise fully: 14x² + 12x

    Answer: 2x(7x + 6)
  3. 3. Geometry

    Adjacent = 17cm, hypotenuse = 23cm. Find the angle

    Answer: 42.3°
  4. 4. Ratio

    Find 53% of 167

    Answer: 88.51
  5. 5. Statistics

    Find the range of: 5, 21, -14, -23, 7

    Answer: 44

Tuesday 18 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    What is the missing number: 30 + ? = 139

    Answer: 109
  2. 2. Algebra

    Solve: x8 = 3.5

    Answer: x = 28
  3. 3. Geometry

    Find c if a = 18cm and b = 20cm in a right triangle

    Answer: 26.9cm
  4. 4. Ratio

    Simplify: 12:16:16

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

    A spinner has 2 red, 2 blue and 2 green sections. Probability of landing on red?

    Answer: 13

Wednesday 19 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 23 + 12 + 14

    Answer: 1712
  2. 2. Algebra

    Factorise: 9x² + 9x

    Answer: 9x(x + 1)
  3. 3. Geometry

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

    Answer: 32°
  4. 4. Ratio

    Simplify: 20:24:16

    Answer: 5:6:4
  5. 5. Statistics

    Calculate the mean of: 35, 7, 11, 20, 24, 25, 19, 44

    Answer: 23.1

Thursday 20 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    Calculate: 127 + 497

    Answer: 127 + 497 = 624
  2. 2. Algebra

    Factorise: 3x² + 7x

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

    Adjacent = 16cm, hypotenuse = 23cm. Find the angle

    Answer: 45.9°
  4. 4. Ratio

    Find 66% of 342

    Answer: 225.72
  5. 5. Statistics

    A spinner has 6 red, 2 blue and 4 green sections. Probability of landing on red?

    Answer: 12

Friday 21 January 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    The sum of three consecutive numbers is 108. What are the numbers?

    Answer: 35, 36, and 37
  2. 2. Algebra

    Solve: x8 = 4.125

    Answer: x = 33
  3. 3. Geometry

    Opposite = 11cm, adjacent = 16cm. Calculate the angle

    Answer: 34.5°
  4. 4. Ratio

    Simplify: 10:12:10

    Answer: 5:6:5
  5. 5. Statistics

    Calculate the mean of: 20, 12, 11, 47, 5, 24

    Answer: 19.8