คำตอบ - Long addition
89.96
คำอธิบายทีละขั้นตอน
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | tens | ones | . | tenths | hundredths |
| Carry | |||||
| 8 | 5 | . | 2 | 6 | |
| + | 4 | . | 7 | ||
| . |
Put zeros in the blank number places:
| Place value | tens | ones | . | tenths | hundredths |
| Carry | |||||
| 8 | 5 | . | 2 | 6 | |
| + | 4 | . | 7 | 0 | |
| . |
2. Add up the digits in each column, from right to left
Add the numbers in the hundredths place value.
6+0=6
Write 6 in the hundredths place.
| Place value | tens | ones | . | tenths | hundredths |
| Carry | |||||
| 8 | 5 | . | 2 | 6 | |
| + | 4 | . | 7 | 0 | |
| . | 6 |
Add the numbers in the tenths place value.
2+7=9
Write 9 in the tenths place.
| Place value | tens | ones | . | tenths | hundredths |
| Carry | |||||
| 8 | 5 | . | 2 | 6 | |
| + | 4 | . | 7 | 0 | |
| . | 9 | 6 |
Add the numbers in the ones place value.
5+4=9
Write 9 in the ones place.
| Place value | tens | ones | . | tenths | hundredths |
| Carry | |||||
| 8 | 5 | . | 2 | 6 | |
| + | 4 | . | 7 | 0 | |
| 9 | . | 9 | 6 |
Add the numbers in the tens place value.
Write 8 in the tens place.
| Place value | tens | ones | . | tenths | hundredths |
| Carry | |||||
| 8 | 5 | . | 2 | 6 | |
| + | 4 | . | 7 | 0 | |
| 8 | 9 | . | 9 | 6 |
The solution is: 89.96
ทำไมต้องเรียนสิ่งนี้
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.