Solution - Long addition
109
Video Explanation
Step-by-step explanation
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundreds | tens | ones |
| TABLE_NAME_CARRY | |||
| 9 | 9 | ||
| + | 1 | 0 | |
2. Add up the digits in each column, from right to left
Add the numbers in the ones place value.
9+0=9
Write 9 in the ones place.
| Place value | hundreds | tens | ones |
| TABLE_NAME_CARRY | |||
| 9 | 9 | ||
| + | 1 | 0 | |
| 9 |
Add the numbers in the tens place value.
9+1=10
Write 0 in the tens place.
Because the sum is greater than 9, carry the 1 to the hundreds place.
| Place value | hundreds | tens | ones |
| TABLE_NAME_CARRY | 1 | ||
| 9 | 9 | ||
| + | 1 | 0 | |
| 0 | 9 |
Add the numbers in the hundreds place value.
Write 1 in the hundreds place.
| Place value | hundreds | tens | ones |
| TABLE_NAME_CARRY | 1 | ||
| 9 | 9 | ||
| + | 1 | 0 | |
| 1 | 0 | 9 |
The solution is: 109
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Please leave us feedback.Why learn this
Addition is the most basic math action and is used daily by almost everybody. Playing games, paying at the supermarket, and cooking are just a few examples of when we add.
Long addition is a clear and simple method to add numbers. Especially big numbers.
Although today calculators do this job for us, understanding the concept of addition is a key ability for understanding math.