NumberP6 level16 questions in the full course

Round DecimalsSEAG Practice Questions

Supporting estimation practice: rounding decimals to the nearest whole number or one decimal place.

Where your child meets this in real life: Rounding prices to nearest pound, or measurements to sensible precision

What your child needs to know

In the SEAG test

Each SEAG paper has 28 maths questions. Questions 29 to 50 are multiple choice with five possible answers, and questions 51 to 56 need a short written answer. With 56 questions in 60 minutes across English and maths, that is about a minute per question.

SEAGReady breaks round decimals into 2 steps, taught in order so each skill builds on the last.

  1. 1

    Round to Nearest Whole Number

    Round a number with one decimal place to the nearest whole number by looking at the tenths digit (e.g., 14.7 rounds to 15)

  2. 2

    Round to One Decimal Place

    Round a number with two decimal places to one decimal place by looking at the hundredths digit (e.g., 3.46 rounds to 3.5)

Try these SEAG-style questions

Try three free questions from our round decimals course. They start easy and get harder, so you can see where your child's confidence runs out. If they manage the last one without a hint, this topic is probably secure. If not, the steps above show where to start.

Question 1Confidence builder

Anna ran a race in 12.8 seconds. Round this time to the nearest whole second.

Answer choices for question 1
Question 2Standard

A bottle contains 1.85 litres of juice. Round this to one decimal place.

Answer choices for question 2
Question 3Stretch

Andrew has these measurements: 4.2 m, 4.7 m, 4.5 m, 5.3 m and 5.6 m. He rounds each to the nearest whole metre. How many of them round to 5 metres?

Answer choices for question 3

Try the lesson: Round to Nearest Whole Number

This is the exact interactive worked example your child sees in SEAGReady. Step through it and watch the method build up.

Emma ran the school race in 14.7 seconds. The teacher wants to record the time to the nearest whole second.

What is 14.7 rounded to the nearest whole number?

14.7 → ?

Identify the rounding digit
1

We want the nearest whole number

Step 1 of 4

Prefer to read? See every step written out

Emma ran the school race in 14.7 seconds. The teacher wants to record the time to the nearest whole second.

What is 14.7 rounded to the nearest whole number?

  1. 1

    Identify the rounding digit

    • We want the nearest whole number
    • Look at the digit after the ones place: the tenths14.7: tenths digit = 7
  2. 2

    Apply the rounding rule

    • If 5 or more, round up. If less than 5, round down
    • 7 is 5 or more, so round up14 → 15

14.7 rounded to the nearest whole number is 15 seconds.

The key insight: The tenths digit tells you which way to round - it's like asking 'is this closer to 14 or 15?'

Common mix-up: 14.7 → 14. Rounding down when the digit is 5 or more. Remember: 5, 6, 7, 8, 9 all round UP!

Mistakes to watch for

These are the misconceptions we see most often in round decimals, including the ones our practice questions are specifically designed to catch.

  • Rounding 4.45 to 4.4 instead of 4.5 (not looking at the correct digit)
  • Cascade rounding (rounding 4.449 step by step incorrectly)
  • Not understanding which digit determines rounding

Build these skills first

Struggling with round decimals? The real gap is often in one of these earlier topics.

More number practice

Sitting the SEAG test this November? Read our last-month revision plan, Paper 1 vs Paper 2 and test day guide.

16 questions on this topic alone

Master round decimals and everything it unlocks

SEAGReady finds the exact step where your child gets stuck, teaches it with worked examples like the one above, and brings it back for review so it sticks.

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