Rounding decimals to the nearest whole number, one decimal place, or two decimal places.
Where your child meets this in real life: Rounding prices to nearest pound, or measurements to sensible precision
SEAGReady breaks round decimals into 3 steps, taught in order so each skill builds on the last.
Master round to nearest whole number skills
Master round to one decimal place skills
Master round to two decimal places skills
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.
Aoife ran a race in 12.8 seconds. Round this time to the nearest whole second.
Answer: A. 13 seconds
To round 12.8 to the nearest whole number: 1. Look at the tenths digit: 8 2. Since 8 is 5 or more, round up 3. 12 rounds up to 13 Answer: 13 seconds
Stuck? Start here: Look at the digit after the decimal point. What is the tenths digit?
Emma measured a shelf as 2.34 metres. Round this to one decimal place.
Answer: A. 2.3 metres
To round 2.34 to one decimal place: 1. Keep the tenths digit (3) 2. Look at the hundredths digit to decide: 4 3. Since 4 is less than 5, round down 4. The tenths digit stays as 3 Answer: 2.3 metres
Stuck? Start here: One decimal place means keeping the tenths digit. Which digit decides?
A calculator shows 5.673 after splitting a bill. Round this to two decimal places.
Answer: A. 5.67
To round 5.673 to two decimal places: 1. Keep tenths (6) and hundredths (7) 2. Look at the thousandths digit to decide: 3 3. Since 3 is less than 5, round down 4. The hundredths digit stays as 7 Answer: 5.67
Stuck? Start here: Two decimal places means keeping tenths and hundredths. Which digit decides?
This is the exact interactive worked example your child sees in SEAGReady. Step through it and watch the method build up.
Caitlin 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 → ?
Step 1 of 4
Caitlin 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 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?'
Watch out: 14.7 → 14. Rounding down when the digit is 5 or more. Remember: 5, 6, 7, 8, 9 all round UP!
These are the misconceptions we see most often in round decimals, including the ones our practice questions are specifically designed to catch.
Struggling with round decimals? The real gap is often in one of these earlier topics.
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.