خيارات التسجيل
Formulae and Problem Solving
Course modified date: 8 يونيو 2022
Learn about formulae and problem-solving method. Solving problems with one, two or three stages of calculations, problems that use different operations and problems in a range of contexts. This course is ideal for intermediate learners.
Introdution
A formula is a way of describing a rule or relationship. A formula can be expressed either in words using the word ‘equals’, or in symbols with an equals sign.The plural of formula is formulae.
Here are some examples of formulae from everyday life:
- 100 cm = 1 metre
- 10 km = 6.2 miles
- 10 km = 10000 meter
- 3 times 4 litres = 12 litres
- 100 pence = £1
Problem-solving method
To solve a number problem you must read the question first, and then work out if you need to add, subtract, multiply or divide.
Try using this 4 step method to help you solve formula problems:
1. Read and understand the problem – try to understand what the problem is about, and what you are being asked to do. Underline any key words.
2. Work out what calculations you need to do – Do you need to add, subtract, multiply or divide? Have you solved a similar problem before that can help you solve this one?
3. Carry out the calculations – Try to find the easiest way of working out the problem. Make sure you do all the steps needed to answer the question.
4. Check your answer – Use estimation to see if your answer is about right. Can you use a different method to check your answer, such as working backwards?
You will learn
- Solve problems with one, two or three stages of calculations
- Solve problems that use different operations
- Solve problems in a range of contexts
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