Soluzione - Aggiunta lunga
8
Spiegazione passo passo
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | ones | . | tenths |
| TABLE_NAME_CARRY | |||
| 3 | , | 5 | |
| + | 4 | , | 5 |
| , |
2. Add up the digits in each column, from right to left
Add the numbers in the tenths place value.
5+5=10
Write 0 in the tenths place.
Because the sum is greater than 9, carry 1 to the ones place.
| Place value | ones | . | tenths |
| TABLE_NAME_CARRY | 1 | ||
| 3 | , | 5 | |
| + | 4 | , | 5 |
| , | 0 |
Add the numbers in the ones place value.
1+3+4=8
Write 8 in the ones place.
| Place value | ones | . | tenths |
| TABLE_NAME_CARRY | 1 | ||
| 3 | , | 5 | |
| + | 4 | , | 5 |
| 8 | , | 0 |
The solution is: 8
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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.