Simplification and Order of Operations

What you will be able to do

• Apply the VBODMAS order, resolving 'of', division and multiplication correctly.
• Work through nested brackets and sign changes without error.
• Simplify an expression that mixes fractions and decimals.
• Use (a+b)², (a−b)², a²−b² and (a+b)(a−b) to speed up a product.

What is inside this lesson

1. 1The VBODMAS order
2. 2Signs and nested brackets
3. 3Fractions and decimals under time pressure
4. 4Four identities that speed up products
5. 5Worked example: order and brackets
6. 6Worked example: a fraction chain
7. 7Worked example: identities for a product
8. 8Common mistakes
9. 9Quick revision
10. 10Practice