The **sum** of numbers with more than one digit can be found by **adding each column from right to left**, starting with the ones place.

**Step 1:** Write the second number under the first number so that the corresponding places are lined up.

**Step 2:** Add the ones column (7 + 6 = 13). Since 13 has two digits, both digits won't fit in the ones place. So, write the 3 in the ones place of the

sum, and carry the 1 to the

tens column. This is called

**regrouping**.

**Step 3:** Add the tens column (

1 + 7 + 8 = 16).

Since 16 has two digits, both digits won't fit in the tens place. So, write the 6 in the tens place of the

sum, and carry the 1 to the

hundreds column.

**Step 4:** Add the hundreds column (

1 + 0 + 7 = 8). Write the 8 in the hundreds place of the

sum.

**Step 5:** Add the thousands column (3 + 4 = 7). Write the 7 in the thousands place of the

sum.

**Step 6:** Add the ten thousands column (5 + 7 = 12).

Since 12 has two digits, both digits won't fit in the ten thousands place. So, write the 2 in the ten thousands place of the

sum, and carry the 1 to the

hundred thousands column.

**Step 7:** Add the hundred thousands column (

1 + 2 + 1 = 4). Write the 4 in the hundred thousands place of the

sum.