SEAGReady
NumberP6 level16 questions in the full course
Supporting practice: this topic helps build angle understanding, but it is not selected for official-format mocks.Decimal rounding supports estimation, but the current specification only names approximations to the nearest 10 or 100 explicitly.

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

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

  1. 1

    Round to Nearest Whole Number

    supporting lesson — excluded from official-format mocks

    Master round to nearest whole number skills

  2. 2

    Round to One Decimal Place

    supporting lesson — excluded from official-format mocks

    Master round to one decimal place skills

Try these SEAG-style questions

Three free sample questions from our round decimals course. Every question comes with a full explanation, and hints that guide without giving the answer away.

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 2Confidence builder

Rachel measured a shelf as 2.34 metres. Round this to one decimal place.

Answer choices for question 2
Question 3Confidence builder

Georgia's height is 1.5 metres. Round this to the nearest whole metre.

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.

Decimal Place Value

More number practice

Read & Write Whole NumbersIdentify Place Value of a DigitCompare Two Whole NumbersOrder a Set of Whole NumbersAddition Facts to 20Subtraction Facts Within 20
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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