# Lesson Worksheet: Column Addition of Two-Digit Numbers Mathematics • 2nd Grade

In this worksheet, we will practice adding two-digit numbers and record the calculation and any regrouping in columns using the standard algorithm.

**Q1: **

Find .

*Hint*: Do you have to regroup ones to make a ten?

**Q2: **

Chloe spilled ink on her homework.

Find the covered numbers.

**Q3: **

Find the sum.

*Hint*: Add the ones and then add the tens.

**Q4: **

Find .

*Hint:* Do you have to regroup ones to make a ten?

**Q5: **

Isabella is adding 55 and 38.

She added the ones and regrouped 10 ones to make a ten.

Add the tens to finish her work and find .

**Q6: **

Ethan is adding 27 and 35.

He added the ones and regrouped ten ones into a ten.

Add the tens to finish his work and find .

**Q7: **

Find the sum.

*Hint*: Think about what happens when there are more than 10 ones.

**Q8: **

Find the sum.

*Hint*: Add the ones then the tens. What do you do if you have more than 10 ones?

**Q9: **

Find the sum.

*Hint*: Add the ones then the tens. What happens when there are more than 10 ones?

**Q10: **

Ethan spilt ink on his homework.

Help him find the covered numbers.