Addition in Math
Addition is the process of combining two or more numbers to find their total, called the sum. This operation is represented by the plus symbol (+). For example:
5 + 3 = 8
Addition has the following properties:
- Commutative: a + b = b + a
- Associative: (a + b) + c = a + (b + c)
- Identity: a + 0 = a
Addition With Decimal Numbers
The addition of decimal numbers follows a similar process to the addition of whole numbers. Here are the general steps:
- Line up the decimal points: Ensure that the decimal points of the numbers you are adding are aligned.
- Add from the right: Start adding the digits from the right, just like you do with whole numbers.
- Carry over if needed: If the sum of digits in a column is greater than or equal to 10, carry over the extra digit to the next column on the left.
- Continue to the left: Repeat the process, moving to the left and adding the digits in each column along with any carry-over from the previous step.
- Write down the result: Write down the result with the decimal point in the correct position.
Addition Calculations :
| Number 1 | Number 2 | ANSWER: | HOW TO ? |
|---|---|---|---|
| 81 | 38 | 3078 | 81 plus 38 |
| 6 | 98 | 588 | 6 plus 98 |
| 77 | 78 | 6006 | 77 plus 78 |
| 7.9 | 2.6 | 20.54 | 7.9 plus 2.6 |
| 7.6 | 9.1 | 69.16 | 7.6 plus 9.1 |
| 8.2 | 0.3 | 2.46 | 8.2 plus 0.3 |