Lesson 3.1.4.9.3
3.1.4.9.3 Computation: decimals, standard form, ratios, fractions, percentages, significant figures Quiz: AQA Psychology, Unit 4
20 questions
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Lesson 3.1.4.9.3, Computation: decimals, standard form, ratios, fractions, percentages, significant figures: 20 multiple choice questions for the AQA GCSE Psychology (8182), Unit 4: Research methods, written with Revision Ninja.
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The 20 questions
-
What is 0.25 written as a percentage?
- 0.25%
- 25%
- 2.5%
- 250%
-
Write 4 × 10^3 in ordinary form.
- 40000
- 400
- 400000
- 4000
-
Express 3/4 as a decimal.
- 0.5
- 0.75
- 0.34
- 0.43
-
Write 0.0056 in standard form.
- 0.56 × 10^-2
- 56 × 10^-4
- 5.6 × 10^2
- 5.6 × 10^-3
-
Simplify the ratio 12:18.
- 2:3
- 6:8
- 3:2
- 1:2
-
A group of 60 students, 15 chose option A. What percentage chose option A?
- 60%
- 15%
- 25%
- 40%
-
Round 0.04567 to 3 significant figures.
- 0.046
- 0.04567
- 0.0456
- 0.0457
-
How many significant figures does 3.050 have?
- 4
- 3
- 2
- 5
-
20 out of 80 participants recalled a word. What fraction is this in simplest form?
- 2/5
- 1/5
- 1/8
- 1/4
-
The mean of 3, 5 and 10 is what?
- 5
- 6
- 7
- 8
-
A sample of 250 participants is 30% male. How many are male?
- 30
- 83
- 75
- 70
-
Express 0.3 as a fraction in simplest form.
- 1/3
- 3/10
- 3/100
- 3/5
-
A score rises from 40 to 52. What is the percentage increase?
- 12%
- 30%
- 40%
- 52%
-
What is 7.2 × 10^-2 written in ordinary form?
- 7.2
- 0.072
- 720
- 0.72
-
The ratio of boys to girls is 3:5 and there are 40 children. How many are boys?
- 24
- 25
- 16
- 15
-
Which is the standard form of 0.00045?
- 4.5 × 10^-5
- 4.5 × 10^-4
- 0.45 × 10^4
- 4.5 × 10^4
-
What percentage of 84 is 21?
- 84%
- 21%
- 25%
- 75%
-
Round 6789 to 2 significant figures.
- 6800
- 6790
- 7000
- 6700
-
Which decimal represents 5%?
- 5.0
- 0.5
- 0.05
- 0.005
-
A group of 35 items is split in the ratio 2:5. How many items are in the second part?
- 10
- 35
- 14
- 25
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