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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.

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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.

Key Terms

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.

Frequently Asked Questions (Click to see answers)

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.

Try These Related Quizzes

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?

1.7

1.78

1.79

The 4 is less than 5 so is rounded down

4 .

What is 6,691 rounded to 1 significant figure?

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?

3.1

3.2

3.4

The 1 is less than 50 so is rounded down

6 .

What is 3.98 rounded to 1 significant figure?

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?

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)

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