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… Decide on a suitable comparison – eg total cost, cost/year, cost/m2 etc) Be consi...
Edexcel IGCSE Maths复习笔记 1.14.1 Exchange Rates
Edexcel IGCSE Maths复习笔记 1.14.1 Exchange Rates Simplifying exchange rate questions Use ratios! Put exchange rates in ratio form (use more than one line if necessary) Add lines for prices/costs U...
Edexcel IGCSE Maths复习笔记 1.13.2 Standard Form - Harder
Edexcel IGCSE Maths复习笔记 1.13.2 Standard Form - Harder Standard form – harder questions Make sure you are familiar with:Roots & Indices – Basics Standard Form – Basics Harder problems often ...
Edexcel IGCSE Maths复习笔记 1.13.1 Standard Form - Basics
Edexcel IGCSE Maths复习笔记 1.13.1 Standard Form - Basics What is standard form? Standard Form (sometimes called Standard Index Form) is a way of writing very big and very small numbers using power...
Edexcel IGCSE Maths复习笔记 1.12.2 Calculations using Bounds
Edexcel IGCSE Maths复习笔记 1.12.2 Calculations using Bounds What are bounds? Bounds are the smallest – the Lower Bound (LB) – and largest – the Upper Bound (UB) – numbers that a rounded number can...
Edexcel IGCSE Maths复习笔记 1.12.1 Bounds & Error Intervals - Basics
Edexcel IGCSE Maths复习笔记 1.12.1 Bounds & Error Intervals - Basics What are bounds? Bounds are the smallest – the Lower Bound (LB) – and largest – the Upper Bound (UB) – numbers that a rounde...
Edexcel IGCSE Maths 复习笔记 1.11.1 Ratios
Edexcel IGCSE Maths 复习笔记 1.11.1 Ratios What is a ratio? A ratio is a way of comparing one part of a whole to another A ratio can also be expressed as a fraction (of the whole) We often use a ra...
Edexcel IGCSE Maths复习笔记 1.10.1 Rounding & Estimation
Edexcel IGCSE Maths复习笔记 1.10.1 Rounding & Estimation Why use estimation? We estimate to find approximations for difficult sums Or to check our answers are about the right size (right order ...
Edexcel IGCSE Maths复习笔记 1.9.1 Compound Interest
Edexcel IGCSE Maths复习笔记 1.9.1 Compound Interest What is compound interest? Compound interest is where interest is paid on the interest from the year (or whatever time frame is being used) befor...
