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Lintel Apr 26 - May 2 25 questions
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Monday 26 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    760000

    Answer: 7.6 × 105
  2. 2. Algebra

    Factorise: x² + x - 12

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

    Hypotenuse = 40cm, angle = 39°. Find adjacent side

    Answer: 31.cm
  4. 4. Ratio

    Simplify: 12:24:12

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

    The mean of 6 numbers is 21. If 5 of them are 31, 29, 48, 32, 18, what is the missing number?

    Answer: -32

Tuesday 27 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.0021

    Answer: 2.1 × 10-3
  2. 2. Algebra

    Factorise: x² - 12x + 36

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

    Adjacent = 21cm, angle = 51°. Find opposite

    Answer: 25.9cm
  4. 4. Ratio

    Simplify: 24:16:20

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

    Calculate the mean of: 8, 49, 19, 8, 31, 26

    Answer: 23.5

Wednesday 28 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.064

    Answer: 6.4 × 10-2
  2. 2. Algebra

    Factorise: x² - 14x + 49

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

    Adjacent = 29cm, angle = 34°. Find opposite

    Answer: 19.6cm
  4. 4. Ratio

    Simplify: 9:12:18

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

    Calculate the mean of: 38, 39, 42, 10, 30, 35

    Answer: 32.3

Thursday 29 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    8300000

    Answer: 8.3 × 106
  2. 2. Algebra

    Factorise: x² + x - 42

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

    Hypotenuse = 16cm, angle = 37°. Find adjacent side

    Answer: 12.8cm
  4. 4. Ratio

    Divide 112 in the ratio 1:1:2

    Answer: 28, 28 and 56
  5. 5. Statistics

    The mean of 4 numbers is 32. If 3 of them are 19, 26, 19, what is the missing number?

    Answer: 64

Friday 30 April 2021

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    51000000

    Answer: 5.1 × 107
  2. 2. Algebra

    Factorise: x² + 5x - 6

    Answer: (x + 6)(x - 1)
  3. 3. Geometry

    Adjacent = 28cm, angle = 60°. Find opposite

    Answer: 48.5cm
  4. 4. Ratio

    Simplify: 20:12:20

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

    The mean of 4 numbers is 40. If 3 of them are 42, 43, 39, what is the missing number?

    Answer: 36