To work out the sum of two large numbers:
- set the numbers out in columns
- line up the units digits
- start by adding the units digits
- then work across to the left

Software/Applets used on this page
This question appears in the following syllabi:
| Syllabus | Module | Section | Topic | Exam Year |
|---|---|---|---|---|
| AQA GCSE (9-1) Foundation (UK) | N: Structure and Calculation | N2: Four Operations and Place Value | Adding and Subtracting | - |
| CIE IGCSE (9-1) Maths (0626 UK) | 1 Number | C1.8 Four Rules and Precedence | Adding and Subtracting | - |
| Edexcel GCSE (9-1) Foundation (UK) | N: Structure and Calculation | N2: Four Operations and Place Value | Adding and Subtracting | - |
| GCSE Foundation (UK) | Number | Arithmetic | Adding and subtracting | - |
| OCR GCSE (9-1) Foundation (UK) | 1: Number Operations and Integers | 1.01a: Four Rules | Adding and Subtracting | - |
| Universal (all site questions) | A | Arithmetic | Adding and subtracting | - |
