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The nearest 100 to 942 is 900.

Rounding Numbers (Year 5/6)

In Year 5 and 6 Maths, pupils refine their rounding skills, learning to estimate and simplify numbers to make calculations quicker and everyday decisions easier.

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Fascinating Fact:

Builders use rounding when ordering materials, making sure they have enough without working out every small measurement.

In KS2 Maths, pupils learn to round numbers to the nearest 10, 100, 1,000, or even decimal places. Rounding helps with estimation, budgeting, and checking whether answers are reasonable — a vital skill in real-world problem solving.

Key Terms

Rounding: Simplifying a number by adjusting it to the nearest place value, like 3.76 rounding to 3.8.
Estimation: Making an educated guess by using rounded numbers to find an approximate answer.
Decimal Place: The position of a digit after the decimal point that shows parts of a whole number.

Frequently Asked Questions (Click to see answers)

What does rounding mean in Year 5 Maths?

Rounding means changing a number to the nearest place value to make it simpler. For example, 4,657 rounds to 4,700 when rounding to the nearest hundred.

How do you round numbers with decimals in KS2?

Look at the next digit to decide — if it’s 5 or more, round up. If it’s 4 or less, round down. For instance, 3.46 rounds to 3.5.

Why is rounding important in real life?

Rounding is useful for quick mental maths, estimating costs, measuring materials, or checking answers without needing exact calculations every time.

Try These Related Quizzes

1 .

Which number is between 7,000 and 8,000?

650

6,500

7,500

8,500

7,500 is exactly halfway between 7,000 and 8,000 but would be rounded up rather than down

2 .

In which of these questions would you need to round the answer down?

A box holds 12 eggs. How many boxes will I need to hold 80 eggs?

Stickers are £3.75 each. I have £12. How many stickers can I buy?

There are 345 children and teachers going on a school trip. A bus holds 52. How many buses will be needed?

Hot dogs are £2.60. I have £10.40. How many hot dogs can I buy?

12 ÷ 3.75 = 3.2 so we have to round 3.2 down to 3. In the other questions we either round the answer up or leave it as it is

3 .

Which is the nearest 1,000 to 2,845?

1,000

2,000

3,000

4,000

2,845 is much closer to 3,000 than it is to 2,000

4 .

Which is the nearest 1,000 to 15,762?

10,000

15,000

16,000

17,000

15,762 is only 238 less than 16,000

5 .

Which of these numbers would be rounded up to the nearest 1,000?

7,469

2,431

3,050

6,500

When rounding to the nearest 1,000, numbers ending in 500 are rounded up

6 .

Which is the nearest whole number to 1.36?

Decimals less than .5 are rounded down

7 .

Which of these numbers would be rounded up to the nearest 10?

175

263

994

812

When rounding numbers to the nearest 10, numbers ending in 5 are rounded up

8 .

Which is the nearest whole number to 0.5?

When rounding to the nearest whole number, numbers ending in .5 are round up

9 .

Which is the nearest 100 to 942?

800

900

1,000

1,100

942 is closer to 900 than to 1,000

10 .

Which is the nearest million to 3,798,631?

2,000,000

3,000,000

4,000,000

5,000,000

3,798,631 is 201,369 less than 4,000,000

You can find more about this topic by visiting BBC Bitesize - How to round decimal numbers

Author: Amanda Swift (Primary School Teacher & Educational Content Developer)

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