Solve Three-Digit Addition: 273 + 899 in Vertical Format

Video Solution

Solution Steps

00:00 Solve

00:03 Each time we consider combining 2 digits, and then we place

00:06 Let's start by combining ones with ones

00:09 Place the ones, add 1 to the tens

00:13 Combine tens with tens, remember to add 1 to the calculation

00:17 Place tens in tens, add 1 to hundreds

00:22 Combine hundreds with hundreds, remember to add 1

00:26 Place hundreds in hundreds, and add 1 to thousands

00:30 Place 0 in the missing digits

00:33 Combine thousands with thousands, remember to add 1

00:36 Place in thousands

00:39 And this is the solution to the problem

Step-by-Step Solution

To solve this problem, we'll proceed by using vertical addition:

Step 1: Align the numbers by their place values.
Step 2: Add the digits in the units place: $3 + 9 = 12$ . Write down 2 and carry over 1 to the tens column.
Step 3: Add the digits in the tens place along with the carried-over value: $7 + 9 + 1 = 17$ . Write down 7 and carry over 1 to the hundreds column.
Step 4: Add the digits in the hundreds place along with the carried-over value: $2 + 8 + 1 = 11$ . Write down 1, and since there's no more digit to process, the remaining 1 represents a thousand. Thus, we write down 11 for the thousands and hundreds place.

Therefore, the solution to the addition problem is $1172$ .