| M5 Home Page |
| Interactive Mathematics | Addition |
| MathGuide | Addition |
| The Math Page | Add Whole Numbers/Add Decimals |
| The Math Page | More Elementary Addition |
| Fact Monster | Addition Table |
| The Math Page | Elementary Addition |
| The Math Page | Mental Arithmetic: Addition - Problems |
| The Math Page | Add Whole Numbers/Add Decimals - Problems |
| EdHelper | Addition Worksheets |
| His Praise | Math Facts |
| KidZone | Index of Addition Worksheets |
| KidZone | Winter Olympics Themed Worksheets |
| KidZone | Free Grade One Printable Math Worksheets |
| SuperKids | SuperKids Math Worksheet Creator - Addition |