Edexcel IGCSE Maths 复习笔记 1.15.1 Best Buy

Edexcel IGCSE Maths 复习笔记 1.15.1 Best Buy

How do you tackle “Best Buy” problems?

• You may need a range of skills…

1. Decide on a suitable comparison – eg total cost, cost/year, cost/m2 etc)
2. Be consistent with units – convert if necessary
3. Do the calculations – showing working carefully
4. Make sure you answer the question, with reasons

Worked Example

转载自savemyexam