### Subtraction

The following videos demonstrate the strategies our children will learn in relation to subtraction. The children are given opportunities to apply these strategies to their work as simple calculations and as part of problem solving activities. It is very important that children learn their number bonds and facts by heart as this really helps them to subtract accurately.

In subtraction the children will –
• Read, write and interpret mathematical statements involving the subtraction symbol (-) and equals (=).
• Represent subtraction facts within 20 and beyond.
• Solve one step problems (problems with one part) that involve subtraction, including missing number problems.
• Subtract numbers mentally including a three digit number and ones, a three digit number and tens and a three digit number and hundreds.
• Subtract numbers with up-to three digits, using formal written methods.
• Use inverse operations to check answers.
• Solve problems, including missing number problems, using number facts, place value and more complex subtraction methods.
• Subtract whole numbers (including decimals) with more than 4 digits using a formal written method.
• Solve subtraction multi-step problems in contexts, deciding which operations and methods to use and why.