คำตอบ - Long addition
คำอธิบายทีละขั้นตอน
1. Rewrite the numbers from top to bottom, aligned by their place values
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| Carry | ||||||
| 4 | 6 | 5 | 7 | 9 | ||
| 3 | 6 | 9 | 3 | 0 | ||
| + | 2 | 0 | 8 | 0 | 6 | |
2. Add up the digits in each column, from right to left
Add the numbers in the ones place value.
9+0+6=15
Write 5 in the ones place.
Because the sum is greater than 9, carry the 1 to the tens place.
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| Carry | 1 | |||||
| 4 | 6 | 5 | 7 | 9 | ||
| 3 | 6 | 9 | 3 | 0 | ||
| + | 2 | 0 | 8 | 0 | 6 | |
| 5 |
Add the numbers in the tens place value.
1+7+3+0=11
Write 1 in the tens place.
Because the sum is greater than 9, carry the 1 to the hundreds place.
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| Carry | 1 | 1 | ||||
| 4 | 6 | 5 | 7 | 9 | ||
| 3 | 6 | 9 | 3 | 0 | ||
| + | 2 | 0 | 8 | 0 | 6 | |
| 1 | 5 |
Add the numbers in the hundreds place value.
1+5+9+8=23
Write 3 in the hundreds place.
Because the sum is greater than 9, carry the 2 to the thousands place.
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| Carry | 2 | 1 | 1 | |||
| 4 | 6 | 5 | 7 | 9 | ||
| 3 | 6 | 9 | 3 | 0 | ||
| + | 2 | 0 | 8 | 0 | 6 | |
| 3 | 1 | 5 |
Add the numbers in the thousands place value.
2+6+6+0=14
Write 4 in the thousands place.
Because the sum is greater than 9, carry the 1 to the ten thousands place.
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| Carry | 1 | 2 | 1 | 1 | ||
| 4 | 6 | 5 | 7 | 9 | ||
| 3 | 6 | 9 | 3 | 0 | ||
| + | 2 | 0 | 8 | 0 | 6 | |
| 4 | 3 | 1 | 5 |
Add the numbers in the ten thousands place value.
1+4+3+2=10
Write 0 in the ten thousands place.
Because the sum is greater than 9, carry the 1 to the hundred thousands place.
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| Carry | 1 | 1 | 2 | 1 | 1 | |
| 4 | 6 | 5 | 7 | 9 | ||
| 3 | 6 | 9 | 3 | 0 | ||
| + | 2 | 0 | 8 | 0 | 6 | |
| 0 | 4 | 3 | 1 | 5 |
Add the numbers in the hundred thousands place value.
Write 1 in the hundred thousands place.
| Place value | hundred thousands | ten thousands | thousands | hundreds | tens | ones |
| Carry | 1 | 1 | 2 | 1 | 1 | |
| 4 | 6 | 5 | 7 | 9 | ||
| 3 | 6 | 9 | 3 | 0 | ||
| + | 2 | 0 | 8 | 0 | 6 | |
| 1 | 0 | 4 | 3 | 1 | 5 |
The solution is: 104,315
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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.