📐 Part 1: Understanding Place Value

Remember: When we add numbers in columns, we must line up the digits by place value - units under units, tens under tens, hundreds under hundreds!

1. Look at this horizontal addition problem: 234 + 145. Which column should each digit go in?

The 4 from 234 goes in the tens column

The 4 from 234 goes in the units column

The 4 from 234 goes in the hundreds column

2. When aligning 67 + 234 in columns, where should the 7 be placed?

Under the 2 in 234

Under the 3 in 234

Under the 4 in 234

✏️ Part 2: Column Alignment Practice

Instructions: Rewrite each horizontal addition problem in column form. Make sure to align the digits correctly by place value. You do not need to solve the problems - just set them up properly!

3. Rewrite this addition in columns: 156 + 232

4. Rewrite this addition in columns: 48 + 351

5. Rewrite this addition in columns: 429 + 65

6. Rewrite this addition in columns: 73 + 124