Direct Proportion: What Do 7 Burgers Cost? | KS3 Maths (Years 7-9)

4 burgers cost £12 — what do 7 cost? Direct proportion and the unitary method, KS3 maths for Years 7, 8 and 9, with a free worksheet. ▶ Next lesson: Inverse Proportion 📚 Full playlist — KS3 Ratio & Proportion: The Complete Topic (Years 7-9):    • BIDMAS: What Is 2 + 3 × 4? | KS3 Maths (Ye...   📄 Free practice worksheet with full worked answers: https://mathtopus.com/worksheets/dire... By the end of this video you will be able to: • Find the value of one item, then multiply up to any amount you need • Use the unitary method on prices, and on rates like kilometres per litre • Work out which of two packs is the better buy by comparing unit prices • Avoid the trap of adding the difference instead of scaling Chapters 0:00 What do 7 burgers cost? 0:16 Finding the value of one 0:52 The unitary method — the golden rule 1:10 Using it on a rate: kilometres per litre 1:47 Which pack is better value? 2:29 Two common mistakes 2:56 Quick quiz — pause and try 3:39 Key points More free KS3 maths lessons, worksheets and test papers at mathtopus.com. Mathtopus. Maths from every angle. #KS3Maths #Year8Maths #Maths