**Year 4 Maths – Round to 10, 100, and 1000** *KS2 Revision*

## What you need to know

**Things to remember:**

- Use your finger to find the number you’re rounding.
- We look at the number on the RIGHT to see how it rounds.
- If we have 4 or less, the number stays the same.
- If we have 5 or more, the number goes up by 1.
- The numbers to the right of the one we’re rounding become 0.

Let’s remind ourselves how we round to the nearest 10.

We find the tens and then look to the right.

If the units are 4 or less, the number stays the same.

If the units are 5 or more, we round up.

Number Rounded

22 20

31 30

65 70

38 49

But how would we do something like “Round 3256 to the nearest hundred”? We do this in 4 steps.

**Step 1: **Find the place value we are rounding to.

We are rounding to the nearest hundred, so that is the 2.

3**2**56

**Step 2: **Look at the number to the right of the one we’re rounding.

3**2**__5__6

**Step 3: **Round the number.

The number next to the 2 is a 5, which means the 2 goes up by 1.

33_ _

**Step 4: **Make everything to the right of the number you rounded 0s.

3300

We do the same when rounding to the nearest thousand.

Round 5477 to the nearest thousand.

**Step 1: **Find the place value we are rounding to.

We are rounding to the nearest thousand, so that is the 5.

**5**477

**Step 2: **Look at the number to the right of the one we’re rounding.

**5**__4__77

**Step 3: **Round the number.

The number next to the 5 is a 4, which means the 5 stays the same.

5 _ _ _

**Step 4: **Make everything to the right of the number you rounded 0s.

5000

5477 rounded to the nearest thousand is 5000.

## KS2 SATs Flash Cards

- Over 100 KS2 Exam Style questions and answers
- Arithmetic and reasoning sections covered
- Exact same format as the exam

## Example Questions

**Question 1:** Round 7455 to the nearest hundred

**Step 1: **Find the place value we are rounding to.

We are rounding to the nearest hundred, so that is the 4.

7**4**55

**Step 2: **Look at the number to the right of the one we’re rounding.

7**4**__5__5

**Step 3: **Round the number.

The number next to the 4 is a 5, which means the 4 goes up by 1.

75 _ _

**Step 4: **Make everything to the right of the number you rounded 0s.

7500

7455 rounded to the nearest hundred is 7500.

**Question 2:** Round 6283 to the nearest thousand.

**Step 1: **Find the place value we are rounding to.

We are rounding to the nearest thousand, so that is the 6.

**6**283

**Step 2: **Look at the number to the right of the one we’re rounding.

**6**__2__83

**Step 3: **Round the number.

The number next to the 6 is a 2, which means the 6 stays the same.

6 _ _ _

**Step 4: **Make everything to the right of the number you rounded 0s.

6000

6283 rounded to the nearest thousand is 6000.