In this activity, we will be answering short mental arithmetic questions which get progressively harder.
Try to do as much working in your head.
Remember some quick short cuts, such as:
1. To multiply by 4, just double and double again.
2. To find a quarter of something, just halve and halve again.
3. To find 10% of something, just divide by 10.
Let's get started!
View the activity introduction for more information on the topic
Read the question aloud
Open the accessibility toolbar to change fonts and contrast, choose a different language, use a ruler and more
Question
Do you want to skip questions and finish?
Hold up, it looks like there may be an issue with your spelling. Why not try it again?
You need to check your answer before you proceed. Are you sure you want to skip?
Teacher explanation