In this lesson, students put all of their addition and subtraction skills together to solve equations. Julia begins with a Number of the Day warm up activity, followed by practicing 2 and 3 ...

When adding and subtracting numbers it's important to be consistent with positive and negative values. Remember that two plus signs or two minus signs make a positive. One plus and one minus make ...

The best guides and activities from around the BBC. They contain text, videos and challenges to help you understand, practise and test your knowledge. Mental addition and subtraction with Geordie ...