An introduction to the order of operations (BIDMAS or PEMDAS). It shows why a calculation such as 8 + 3 × 4 needs an agreed rule, sets out the order for brackets, powers, multiplication and division, and addition and subtraction, and gives a memory aid for remembering it.
What this presentation covers
- why we need a standard order
- brackets and other grouping symbols
- powers (indices or exponents)
- multiplication and division
- addition and subtraction
- the Please Excuse My Dear Aunt Sally memory aid
Level: KS2 / KS3
Slides: 9
Format: PowerPoint (.pptx)
Contributed by: Robert Clutter