**Rounding to the nearest whole number from 2dp** *KS2 Revision*

## What you need to know

**Things to remember:**

- Figure out the two nearest whole numbers
- Look at the first digit to the right of the decimal point
- Decide whether to round up or down

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 tens stay the same and the units become 0.

If the units are 5 or more, then tens go up by 1 and the units become 0.

Number Rounded

22 20

31 30

65 70

38 49

Round 2.64 to the nearest whole number.

If we put 2.64 on a number line, we would see that it is between 2 and 3, so we need to see if it is nearer to 2 or to 3. We can find out which one we round to by using our usual steps.

**Step 1: **Find the number we’re rounding to (the units).

**2**.64

**Step 2: **Look at the number to the right (the tenths)

**2**.__6__4

__ __

**Step 3: **Round the tenths.

We have a 6, so the 2 is going to increase by 1 to make 3.

3.__00__

**Step 4: **Remove the 0s after the decimal

3

So, 2.64 rounded to the nearest whole number is 3.

We do the same when the tenths are less than 5, but the units don’t change.

## 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 4.55 to the nearest whole number.

**Step 1: **Find the number we’re rounding to (the units).

**4**.55

**Step 2: **Look at the number to the right (the tenths)

**4**.__5__5

**Step 3: **Round the tenths.

We have a 5, so the 4 is going to increase by 1 to make 5.

5.__00__

**Step 4: **Remove the 0s after the decimal

5

So, 4.55 rounded to the nearest whole number is 5.

**Question 2:** Round 0.34 to the nearest whole number.

**Step 1: **Find the number we’re rounding to (the units).

** **

**0**.34

**Step 2: **Look at the number to the right (the tenths)

**0**.__3__4

__ __

**Step 3: **Round the tenths.

We have a 3, so the 0 is going to stay the same.

0.__00__

**Step 4: **Remove the 0s after the decimal.

0

So, 0.34 rounded to the nearest whole number is 0.