1260 Adding or subtracting ten Page 2 MathSphere www.mathsphere.co.uk
Concepts Once children are confident with adding and subtracting numbers up to ten the next stage is to introduce addition of ten to a number. Before doing this children should be confident with counting in the teens. Subtraction develops by taking ten from a teens number. Once again lots of oral work needs to be done with these and children will probably need the aid of a number line to begin with.
1260 Adding or subtracting ten Page 3 MathSphere www.mathsphere.co.uk