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Hi there! I am Studyfin, your learning buddy. Today we will explore how we add and subtract numbers!
Adding is when we put groups of things together. We use a plus sign (+) to show we are adding. This makes a bigger total group.
Let us see how adding works. If you have 3 blue dots and add 2 orange dots, you get 5 dots in total! We can write this as 3 + 2 = 5.
Subtraction is when we take some things away from a group. We use a minus sign (-) to show we are subtracting. This makes our group smaller.
✏️ Worked example
Leo has 12 toy cars. He gives 4 cars to his sister. Then, his dad buys him 3 more cars. How many toy cars does Leo have now?
- First, find out what the question asks. We need to find the total number of cars Leo has now.
- Start with the number of cars Leo has at first. That is 12 cars.
- Leo gives 4 cars away. Giving away means we subtract. So we do 12 minus 4. This leaves Leo with 8 cars.
- Next, Leo gets 3 more cars. Getting more means we add. So we add 3 to his 8 cars.
- Add the numbers: 8 + 3 = 11.
- Leo has 11 toy cars now!
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