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Add Two Large Numbers Using Different Methods

In this worksheet, students add two numbers with four digits or more using two different methods.

'Add Two Large Numbers Using Different Methods' worksheet

Key stage:  KS 2

Curriculum topic:   Number: Addition and Subtraction

Curriculum subtopic:   Add/Subtract Four-Digit (or more) Numbers

Difficulty level:  

Worksheet Overview

In this activity, we will learn how to add two numbers using two methods.

 

e.g. Add the numbers below together:

22478 + 15622

 

 

Method 1:

 

1. Add the ten thousands, 20000 + 10000 = 30000.

 

2. Add the thousands, 2000 + 5000 = 7000.

 

3. Add the hundreds, 400 + 600 = 1000.

 

4. Add the tens, 70 + 20 = 90.

 

5. Add the ones, 8 + 2 = 10.

 

6. Add the total for the answer below, making sure to line up the numbers in their correct place value columns. 

 

+
 
2
2
4
7
8
 
1
5
6
2
2
 
 
3
0
0
0
0
 
 
 
7
0
0
0
 
 
 
1
0
0
0
 
 
 
 
 
9
0
 
 
 
 
 
1
0
 
 
3
8
1
0
0
 

 

 

Method 2:

 

This is column addition with regrouping if a column adds to 10 or more.

 

1. Add the ones, 8 + 2 = 10. Write the 0 in the ones column, and regroup the 1 under the tens column.

 

2. Add the tens column, including the regrouped 1. Add 7 + 2 + 1 = 10. Write the 0 in the tens column and regroup the 1 under the hundreds column.

 

3. Add the hundreds column, including the regrouped 1. Add 4 + 6 + 1 = 11. Write the 1 in the hundreds column and regroup the 1 under the thousands column.

 

4. Add the thousands column, including the regrouped 1. Add 5 + 2 + 1 = 8.

 

5. Add the ten thousands column, 2 + 1 = 3.

 

Adding with regrouping

So in summary:

22478 + 15622 = 38100

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