I've updated the JSON-LD schema to include Frank Evans as the author. I added the author property within the mainEntity object.
Lucy
Ask the AI Tutor
Need help with Level 3-4 Numbers - Rounding? Ask our AI Tutor!
Lucy AI Tutor - Lucy
Connecting with Tutor...
Please wait while we establish connection
Lucy
Hi! I'm Lucy, your AI tutor. How can I help you with Level 3-4 Numbers - Rounding today?
now
Level 3-4 Numbers - Rounding
What is 448 rounded to the nearest 10?

Level 3-4 Numbers - Rounding

Round numbers confidently in KS3 maths. Learn when to round up or down, choose suitable accuracy, and use decimal places and significant figures in real situations.

Explore the Topic →
(quiz starts below)

Fascinating Fact:

In measurements, rounding ensures equipment gives results with sensible precision, such as measuring to the nearest centimetre.

In KS3 Maths, rounding makes numbers simpler while staying close to the original value. You will round whole numbers and decimals, choose a sensible level of accuracy, and use significant figures for scientific style answers.

  • Rounding: Changing a number to a nearby value with fewer digits, such as to the nearest 10 or to 2 decimal places.
  • Degree of accuracy: How precise a rounded answer is, for example nearest centimetre or 3 significant figures.
  • Significant figure: Digits that carry meaning about size. Count from the first non-zero digit, including digits after the decimal point.
What are the basic rules for rounding numbers?

Look at the next digit. If it is 0 to 4, round down. If it is 5 to 9, round up. This rule also works for negative numbers, for example −3.26 to 1 decimal place is −3.3.

How do I round to a given number of decimal places?

Keep the stated number of decimal places and check the next one. Example: 3.276 to 2 decimal places looks at the third decimal 6, so it rounds to 3.28.

What does rounding to 2 significant figures mean?

Keep the first two non-zero digits then round using the next digit. Examples: 15,462 to 2 s.f. is 15,000, and 0.004872 to 2 s.f. is 0.0049.

1 .
What is 448 rounded to the nearest 10?
400
440
450
500
A lot of numbers in everday life are rounded
2 .
What is 7,891 rounded to the nearest 1,000?
7,000
7,500
7,800
8,000
7,891 is only 109 less than 8,000 but 891 more than 7,000
3 .
What is 1.784 rounded to 2 decimal places?
1
1.7
1.78
1.79
The 4 is less than 5 so is rounded down
4 .
What is 6,691 rounded to 1 significant figure?
6
66
670
7,000
As the number has 4 columns the significant figure is 1,000
5 .
What is 3.114 rounded to 1 decimal place?
3
3.1
3.2
3.4
The 1 is less than 50 so is rounded down
6 .
What is 3.98 rounded to 1 significant figure?
3
4
5
6
It's closer to 4 than to 3
7 .
What is 9.825 rounded to 2 decimal places?
9.8
9.82
9.83
9.9
Remember if it's halfway, round up!
8 .
What is 450 rounded to the nearest 100?
300
400
500
600
If a number is halfway between two values, round upwards
9 .
What is 448 rounded to the nearest 100?
300
400
500
600
It is closer to 400 than 500
10 .
What is 277 rounded to 1 significant figure?
2
30
200
300
It's closer to 300 than to 200
You can find more about this topic by visiting BBC Bitesize - Rounding and estimating

Author:  Frank Evans (Specialist 11 Plus Teacher and Tutor)

© Copyright 2016-2025 - Education Quizzes
Work Innovate Ltd - Design | Development | Marketing