# Add numbers with up to 4 digits together

## Learning focus

Learn how to add numbers with up to 4 digits together.

This includes:

• a catch-up quiz
• one video
• three slideshows

# Quiz

To get started, let's see how well you know this topic already. Take the catch-up quiz below to find out.

# Learn

Let's recap the basic method for column addition with this video from KS2 Maths.

The column method involves writing one number underneath the other.

Add the numbers, starting from the right.

## Example 2

If the two numbers in a place value column add up to a number greater than 9, you must carry a digit.

If you can add two 3-digit numbers, then you can use the exact same method to add 4-digit numbers together!

Just remember to add on the number that you carry over.

## Checklist

• When writing down sums, separate the numbers into ones, tens, hundreds and thousands.
• List the numbers in a column and always start adding the ones first.
• Estimate first and check afterwards - it's a good idea to estimate a rough answer and then check your actual answer.
• Order doesn't matter - for example, remember that 345 + 129 is the same as 129 + 345.
• Key words - look out for these words in problems: total, sum, altogether, more. They all indicate an addition calculation.