Round 3.746 to 1 decimal place
- 1 decimal place means keep the tenths digit: 7.
- Look at the next digit, which is 4.
- 4 is less than 5, so the 7 stays the same.
Answer: 3.746 ≈ 3.7
🔢 Number
Rounding
Round whole numbers and decimals to a chosen place value.
Global XP
Level 10 / 100 XP
1. Explanation
Key idea
- Rounding makes a number easier to use while keeping it close to the original value.
- Look at the digit to the right of the place you are rounding to.
- If that digit is 5 or more, round up. If it is 4 or less, keep the digit the same.
Real-life examples
- Estimating a shopping total before paying.
- Rounding a journey time to the nearest 10 minutes.
2. Visual
Number line check
46 is closer to 50 than 40, so 46 rounds to 50 to the nearest ten.
3. Help guide
How to tackle Rounding
- Learn the rule: Write the value carefully, choose the correct operation, then check with estimation.
- Worked model: Identify the topic rule. Apply it to the given values. Check the final answer.
- Try the interactive question without looking at the answer first.
- Use the flashcards to test the rule, the method and a common check.
4. Worked examples
Step-by-step working
5. Interactive questions
Try it yourself
Round 68 to the nearest ten.
6. Flashcards
Master quick recall
Flip each card, then choose whether you know it or need more practice.
0 mastered
FrontWhen do you round up?
BackRound up when the next digit is 5, 6, 7, 8 or 9.
FrontRound 124 to the nearest hundred.
Back100, because 124 is closer to 100 than 200.
FrontRule for Rounding
BackWrite the value carefully, choose the correct operation, then check with estimation.
7. Finish
Complete this topic
When you have read the examples, tried the question and reviewed flashcards, claim your topic completion XP.