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

## Glossary

### union

The union of two sets A and B is the set containing all the elements of A and B.

### work

Equal to F x s, where F is the force in Newtons and s is the distance travelled and is measured in Joules.

## This question appears in the following syllabi:

Syllabus | Module | Section | Topic | Exam Year |
---|---|---|---|---|

GCSE Foundation (UK) | Number | Arithmetic | Adding and subtracting | - |

Universal (all site questions) | A | Arithmetic | Adding and subtracting | - |

Edexcel GCSE (9-1) Foundation (UK) | N: Structure and Calculation | N2: Four Operations and Place Value | Adding and Subtracting | - |

OCR GCSE (9-1) Foundation (UK) | 1: Number Operations and Integers | 1.01a: Four Rules | Adding and Subtracting | - |

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 | - |