-
Introduction
View the activity introduction for more information on the topic
-
Read aloud
Read the question aloud
-
Accessibility
Open the accessibility toolbar to change fonts and contrast, choose a different language, use a ruler and more
When you are adding and subtracting decimals, there are two key things you need to do:
1) Line up your decimal points.
2) Fill in the decimals places, so there are the same amount in each question.
e.g. 4.75 + 2.4
Step 1: Set up the addition, taking care to line up your decimal points and add extra zeros where needed.
4.75 |
+ 2.40 |
Step 2: Complete the addition as normal.
4.75 |
+ 2.40 |
7.15 |
e.g. 3.845 - 0.48
Step 1: Set up the subtraction, taking care to line up your decimal points and add extra zeros.
3.845 |
- 0.480 |
Step 2: Complete the subtraction as normal.
3.845 |
- 0.480 |
3.365 |
Before you start this activity, grab a pen and paper so you can write out your own addition and subtraction sums to work them out.
Question
/ 10Mr Parkinson
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