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11+ decimals and rounding questions

Decimals and rounding comes up in the maths paper of every major 11+ format. Here is what the questions look like, the method that works under time pressure, and five worked examples with the full reasoning, from a gentle start to a hard paper.

Maths · examined by GL and CEM · 5 worked examples

What your child needs to know

Where marks get lost: 5 or more rounds up; 4 or less rounds down.

Worked examples

Every question below is generated by the same engine your child practises on, and every answer is derived by our checker rather than written by hand — which is why we can put them on a public page at all.

Example 1 · level 1a gentle start

Round 7.99 to the nearest whole number.

  • 8
  • 7.9
  • 7
  • 8.0

Answer: 8 Look at the next digit of 7.99 to decide whether to round up or down: 8.

Example 2 · level 2typical of early practice

Round 1.81 to the nearest whole number.

  • 1.8
  • 2
  • 1
  • 1.9

Answer: 2 Look at the next digit of 1.81 to decide whether to round up or down: 2.

Example 3 · level 3standard paper difficulty

What is 16.60 + 1.52?

  • 15.08
  • 18.02
  • 19.12
  • 18.12

Answer: 18.12 16.60 + 1.52 = 18.12.

Example 4 · level 4a harder paper

Round 78.20 to 1 decimal place.

  • 78.3
  • 78
  • 78.2
  • 78.4

Answer: 78.2 Look at the next digit of 78.20 to decide whether to round up or down: 78.2.

Example 5 · level 5the level that separates candidates

What is 33.86 + 10.72?

  • 44.48
  • 44.58
  • 45.58
  • 23.14

Answer: 44.58 33.86 + 10.72 = 44.58.

How to practise this at home

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More maths topics

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