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Lintel Feb 7 - 13 25 questions
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Monday 7 February 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    540000

    Answer: 5.4 × 105
  2. 2. Algebra

    Factorise: x² - 8x + 15

    Answer: (x - 5)(x - 3)
  3. 3. Geometry

    Hypotenuse = 26cm, angle = 54°. Find adjacent side

    Answer: 15.3cm
  4. 4. Ratio

    Simplify: 12:9:18

    Answer: 4:3:6
  5. 5. Statistics

    The mean of 4 numbers is 34. If 3 of them are 24, 34, 30, what is the missing number?

    Answer: 48

Tuesday 8 February 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    19000000

    Answer: 1.9 × 107
  2. 2. Algebra

    Factorise: x² - 9x + 20

    Answer: (x - 4)(x - 5)
  3. 3. Geometry

    Hypotenuse = 38cm, angle = 26°. Find adjacent side

    Answer: 34.2cm
  4. 4. Ratio

    Divide 117 in the ratio 4:4:1

    Answer: 52, 52 and 13
  5. 5. Statistics

    The mean of 4 numbers is 24. If 3 of them are 39, 18, 42, what is the missing number?

    Answer: -3

Wednesday 9 February 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.017

    Answer: 1.7 × 10-2
  2. 2. Algebra

    Factorise: x² + x - 2

    Answer: (x + 2)(x - 1)
  3. 3. Geometry

    Adjacent = 15cm, angle = 56°. Find opposite

    Answer: 22.2cm
  4. 4. Ratio

    Divide 120 in the ratio 3:3:4

    Answer: 36, 36 and 48
  5. 5. Statistics

    Calculate the mean of: 19, 22, 39, 32, 20, 42, 18

    Answer: 27.4

Thursday 10 February 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00028

    Answer: 2.8 × 10-4
  2. 2. Algebra

    Factorise: x² + x - 12

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

    Hypotenuse = 36cm, angle = 35°. Find adjacent side

    Answer: 29.5cm
  4. 4. Ratio

    Simplify: 20:20:8

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

    Calculate the mean of: 14, 24, 22, 29, 48, 34, 48

    Answer: 31.3

Friday 11 February 2022

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    790000

    Answer: 7.9 × 105
  2. 2. Algebra

    Factorise: x² + 2x - 24

    Answer: (x + 6)(x - 4)
  3. 3. Geometry

    Adjacent = 13cm, angle = 48°. Find opposite

    Answer: 14.4cm
  4. 4. Ratio

    Express the first part of 5:3 as a fraction in simplest form

    Answer: 58
  5. 5. Statistics

    The mean of 6 numbers is 24. If 5 of them are 22, 17, 18, 49, 49, what is the missing number?

    Answer: -11