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Fish Shop Maths

Fish Shop Maths. To understand and use the correct order of operations. A man walks into a Chip shop …. Rita owns a fish & chip shop. Write down the exact portions of food each customer orders Eg 3 fish, 4 chips, 1 sausage. John. Three fish and four chips, ta!. Freddie.

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Fish Shop Maths

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  1. Fish Shop Maths www.mathssandpit.co.uk/blog To understand and use the correct order of operations

  2. A man walks into a Chip shop … • Rita owns a fish & chip shop. • Write down the exact portions of food each customer orders • Eg 3 fish, 4 chips, 1 sausage www.mathssandpit.co.uk/blog

  3. John Three fish and four chips, ta! www.mathssandpit.co.uk/blog

  4. Freddie Sausage and chips twice, please! www.mathssandpit.co.uk/blog

  5. Brian Five fish and chips. Thanks! www.mathssandpit.co.uk/blog

  6. So what did Rita have to serve up? • John Three fish and four chips, ta! 3 fish 4 portions of chips www.mathssandpit.co.uk/blog

  7. So what did Rita have to serve up? • Freddie Sausage and chips twice, please! 2 sausages 2 portions of chips www.mathssandpit.co.uk/blog 1 sausage 2 portions of chips

  8. So what did Rita have to serve up? • Brian Five fish and chips. Thanks 5 fish 1 portion of chips www.mathssandpit.co.uk/blog 5 fish 5 portions of chips

  9. Confused? • Why were there two possible answers to some of the orders? • In a maths lesson, can there ever be two possible answers to a simple calculation? www.mathssandpit.co.uk/blog

  10. Try this: • Compare your answers with a partner 2 × 3 + 5 1 + 3 × 5 www.mathssandpit.co.uk/blog

  11. The solution • All mathematicians in the world have agreed a set order to work out these calculations: Brackets Indices (Powers) www.mathssandpit.co.uk/blog Multiply Divide Add Subtract

  12. Example • What is 5 × (6 + 4) ÷ 2? • What do we need to use? • 5 × (6 + 4) ÷ 2 • 5 × 10 ÷ 2 • 5 × 5 • 25 • Did you do 50 ÷ 2? • Did you get the same answer? Brackets Indices (Powers) www.mathssandpit.co.uk/blog Multiply Divide Add Subtract • Remember: No swapping where the numbers go

  13. Questions • 5 × (2 + 1) • 5 × 2 + 1 • 12 + 4 ÷ 2 • (12 + 4) ÷ 2 • 3 × 10 ÷ 5 • 10 ÷ 5 × 3 • 3 × 6 ÷ 2 - 1 • 3 × 6÷ (2 - 1) www.mathssandpit.co.uk/blog

  14. Answers (Click to reveal) • 5 × (2 + 1) • 5 × 2 + 1 • 15 – 4 × 3 • 12 + 4 ÷ 2 • (12 + 4) ÷ 2 • 3 × 10 ÷ 5 • 10 ÷ 5 × 3 • 3 × 6 ÷ 2 - 1 • 3 × 6÷ (2 - 1) • 15 • 11 • 3 • 14 • 8 • 6 • 6 • 8 • 18 www.mathssandpit.co.uk/blog

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