คำตอบ - Long addition
86.25
คำอธิบายทีละขั้นตอน
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths |
| TABLE_NAME_CARRY | |||||
| 8 | 0 | ||||
| + | 6 | . | 2 | 5 | |
| . |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths | hundredths |
| TABLE_NAME_CARRY | |||||
| 8 | 0 | . | 0 | 0 | |
| + | 6 | . | 2 | 5 | |
| . |
2. Add up the digits in each column, from right to left
Add the numbers in the hundredths place value.
0+5=5
Write 5 in the hundredths place.
| Place value | tens | ones | . | tenths | hundredths |
| TABLE_NAME_CARRY | |||||
| 8 | 0 | . | 0 | 0 | |
| + | 6 | . | 2 | 5 | |
| . | 5 |
Add the numbers in the tenths place value.
0+2=2
Write 2 in the tenths place.
| Place value | tens | ones | . | tenths | hundredths |
| TABLE_NAME_CARRY | |||||
| 8 | 0 | . | 0 | 0 | |
| + | 6 | . | 2 | 5 | |
| . | 2 | 5 |
Add the numbers in the ones place value.
0+6=6
Write 6 in the ones place.
| Place value | tens | ones | . | tenths | hundredths |
| TABLE_NAME_CARRY | |||||
| 8 | 0 | . | 0 | 0 | |
| + | 6 | . | 2 | 5 | |
| 6 | . | 2 | 5 |
Add the numbers in the tens place value.
Write 8 in the tens place.
| Place value | tens | ones | . | tenths | hundredths |
| TABLE_NAME_CARRY | |||||
| 8 | 0 | . | 0 | 0 | |
| + | 6 | . | 2 | 5 | |
| 8 | 6 | . | 2 | 5 |
The solution is: 86.25
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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.