Learning objectives
Choose suitable methods, show working and check whether answers make sense.
By the end of this course, you should be able to explain the key ideas, use the methods and answer practice questions.
Lesson notes
Understand the problem
Read carefully. Identify what is known and what needs to be found.
Choose a method
Decide whether to add, subtract, multiply, divide, draw a diagram or use an equation.
Show your working
Write each step clearly so that another person can follow your reasoning.
Check the answer
Estimate first, then check the calculation and units.
Example
A class has 24 pupils. They form teams of 4. Number of teams = 24 ÷ 4 = 6.
Worked example
A bus has 40 seats. If 27 are occupied, empty seats = 40 − 27 = 13.
Practice quiz
Enter an answer for each question. Then select Check answers. For fractions, use forms such as 1/2.