โ Definition of Addition
Addition is the process of combining two or more numbers (or quantities) to find their total. It's like putting things together! The numbers being added are called addends, and the result is called the sum. The symbol for addition is the plus sign (+).
For example: $2 + 3 = 5$
- ๐ข Combining: โ Addition combines quantities.
- ๐ Increasing: Addition always results in a larger number (or the same number if adding zero).
- ๐ค Joining: Think of addition as joining groups together.
โ Definition of Subtraction
Subtraction is the process of finding the difference between two numbers (or quantities). It's like taking things away! The number being subtracted from is called the minuend, the number being subtracted is called the subtrahend, and the result is called the difference. The symbol for subtraction is the minus sign (-).
For example: $5 - 2 = 3$
- โ๏ธ Taking Away: โ Subtraction takes away quantities.
- ๐ Decreasing: Subtraction usually results in a smaller number.
- ๐๏ธ Removing: Think of subtraction as removing items from a group.
๐ Addition vs. Subtraction: A Comparison Table
| Feature |
Addition |
Subtraction |
| Definition |
Combining quantities |
Finding the difference between quantities |
| Symbol |
+ (Plus sign) |
- (Minus sign) |
| Effect |
Increases the total |
Decreases the total |
| Keywords |
Sum, total, plus, combine |
Difference, minus, take away, reduce |
| Example |
$3 + 4 = 7$ |
$7 - 4 = 3$ |
๐ก Key Takeaways
- โ
Addition: โ is about combining and increasing.
- โ Subtraction: โ๏ธ is about taking away and decreasing.
- ๐ Inverse Operations: Addition and subtraction are inverse operations; they undo each other.
- ๐งฎ Real-World: Use addition to calculate totals and subtraction to calculate remainders.