➕ Topic Summary
Let's learn about subtraction! Subtraction means taking away a number from another number. When we see $2-1$, it means we start with 2 and take away 1. When we see $2-2$, it means we start with 2 and take away 2. We will use objects like apples or crayons to visualize the process.
Imagine you have two apples, and you eat one. How many apples do you have left? That's $2-1$! Now, imagine you have two crayons and you give away both of them. How many crayons do you have left? That's $2-2$!
🔤 Part A: Vocabulary
Match the term with the correct definition:
| Term |
Definition |
| 1. Subtract |
A. The answer to a subtraction problem |
| 2. Minus Sign (-) |
B. To take away a number from another number |
| 3. Difference |
C. The number you are taking away |
| 4. Subtrahend |
D. Symbol used to indicate subtraction |
| 5. Start Number |
E. The number you begin with. |
✍️ Part B: Fill in the Blanks
Read the sentences and fill in the missing words:
When we _________ 1 from 2, we write it as 2 - 1. When we _________ 2 from 2, we write it as 2 - 2. The _________ of 2 - 1 is 1. The difference of 2 - 2 is _________. The sign that tells us to subtract is the _________ sign.
🤔 Part C: Critical Thinking
If you have 2 cookies and your friend has 2 cookies, and you eat all of yours, who has more cookies now and why?