GCSE · Rounding & bounds

Rounding and significant figuresExam-style questions

Why significant figures count information rather than decimal places, why the count starts at the first non-zero digit, and why place value must survive the rounding.

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16 questions · GCSE (Higher) level · mark scheme and worked solution on each · no sign-up to try

DifficultyAll Level 1 Level 2 Level 3 Level 4 Level 5

1
(a) Round 4562 to 2 significant figures.

(b) Round 0.030472 to 3 significant figures.

(c) Round 18.965 to 1 decimal place.
Level 3 · 3 marksTry it
2
$x = 5.3$ , correct to 1 decimal place. Write down the error interval for $x$ .
Level 3 · 2 marksTry it
3
The mass of a bag, $m$ kg, is $12$ kg correct to the nearest kilogram.

Write down the error interval for $m$ .
Level 3 · 2 marksTry it