คำตอบ - Long addition
4
คำอธิบายทีละขั้นตอน
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones |
| TABLE_NAME_CARRY | |
| 2 | |
| + | 2 |
2. Add up the digits in each column, from right to left
Add the numbers in the ones place value.
2+2=4
Write 4 in the ones place.
| Place value | ones |
| TABLE_NAME_CARRY | |
| 2 | |
| + | 2 |
| 4 |
The solution is: 4
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Learn more with Tiger
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.