# Add Integers Using the Column Method

In this worksheet, students will practise using the column method in addition sums involving up to 3 digits and 3 numbers.

Key stage:  KS 4

GCSE Subjects:   Maths

GCSE Boards:   Pearson Edexcel, OCR, Eduqas, AQA

Curriculum topic:   Number, Number Operations and Integers

Curriculum subtopic:   Structure and Calculation, Calculations with Integers

Difficulty level:

### QUESTION 1 of 10

When you're adding integers using the column method, it's important to remember 3 things:

1) Line up the numbers using place value (units with units, tens with tens, etc.)

2) Start adding from the right.

3) Don't forget to carry.

e.g. 185 + 71

Step 1: Set up the addition accurately.

 185 +   71

Step 2: Start by adding the units. (5 + 1 = 6)

 185 +   71 6

Step 3: Now add the tens column. (8 + 7 = 15)

As this isn't a single digit number, we have to carry the 1 into the next column like this:

 185 +   71 1 56

Step 4: Finally, add the hundreds column. Don't forget the 1 we carried! (1 + 1 = 2)

 185 +   71 1 256

Answer: 185 + 71 = 256

Before you start this activity, make sure you have a pen and paper handy to write out your columns and sums.

How much is 12 + 82?

How much is 74 + 21?

For the sum 32 + 49, do we have to carry any numbers?

Yes

No

Look at this sum:

86 + 29

Now fill in the spaces in the sentence below.

Yes

No

For the sum 41 + 283, does it matter which number you put on the top row?

Yes

No

How much is 74 + 429?

For the sum 742 + 318, which column(s) will produce answer where you will need to carry?

Units

Tens

Hundreds

How much is 297 + 314?

How much is 82 + 91 + 63?

How much is 847 + 242 + 381?

• Question 1

How much is 12 + 82?

94
EDDIE SAYS
Did you remember our steps? 1) Line up the numbers using place value (units with units, tens with tens, etc) 2) Start adding from the right. Units first > 2 + 2 = 4 Then tens > 1 + 8 = 9 (90) There aren't any tens to carry here so we don't have to worry about that!
• Question 2

How much is 74 + 21?

95
EDDIE SAYS
Use the same steps from the previous question here. This is another one without any carried tens, phew!
• Question 3

For the sum 32 + 49, do we have to carry any numbers?

Yes
EDDIE SAYS
Did you spot it? In the units, we have 9 + 2 = 11. 11 is not a single digit number which means we do have to carry over. We need to split 11 into 10 and 1; we write the 1 in the units column and carry the 10 over.
• Question 4

Look at this sum:

86 + 29

Now fill in the spaces in the sentence below.

EDDIE SAYS
How did you do here? When you are carrying in the units column, you carry the 1 over to the tens as the 1 in 15 actually means 10. Did you check that you had the correct words in the correct gaps and that they were all spelt correctly?
• Question 5

For the sum 41 + 283, does it matter which number you put on the top row?

No
EDDIE SAYS
When you add two numbers together, it doesn't matter which one you put on top, as the answers will be the same. The same rule does not apply to subtractions though, so watch out for those! Keep up the great work!
• Question 6

How much is 74 + 429?

503
EDDIE SAYS
Did you remember our 3 steps from the intro? 1) Line up the numbers using place value (units with units, tens with tens, etc.) 2) Start adding from the right. 3) Don't forget to carry any numbers which exceed a single digit.
• Question 7

For the sum 742 + 318, which column(s) will produce answer where you will need to carry?

Units
Hundreds
EDDIE SAYS
For the units, 8 + 2 = 10, which means we will have to record 0 in the units answer column and carry the ten into the next column. For the tens, 4 + 1 + 1 (our carry from the units column) = 6 We can record this single digit in the tens column so we don't have to carry here. For the hundreds, 7 + 3 = 10 so we have to carry the 1 over into the thousands column. Did you pick those two columns?
• Question 8

How much is 297 + 314?

611
EDDIE SAYS
This is another one to use the 3 intro steps with! Line the columns up, then add the units first, followed by the tens and finally the hundreds. You will need to carry in the units and tens column so be sure to record your working out clearly. Is this getting easier? It will with practice.
• Question 9

How much is 82 + 91 + 63?

236
EDDIE SAYS
Does it matter that this has three numbers? No - you need to set it up exactly the same way, using the three steps you have learnt.
• Question 10

How much is 847 + 242 + 381?

1470
EDDIE SAYS
Three 3-digit numbers? Pure madness! It's still the same technique though, there's just more steps to complete. Take your time and complete each step carefully. The tricky thing here is that you will need to carry in all three columns! Practice makes perfect. That’s another activity ticked off!
---- OR ----

Sign up for a £1 trial so you can track and measure your child's progress on this activity.

### What is EdPlace?

We're your National Curriculum aligned online education content provider helping each child succeed in English, maths and science from year 1 to GCSE. With an EdPlace account you’ll be able to track and measure progress, helping each child achieve their best. We build confidence and attainment by personalising each child’s learning at a level that suits them.

Get started