# Worksheet: Adding Ones to Two-Digit Numbers with Regrouping

In this worksheet, we will practice adding a one-digit number to a two-digit number when crossing a ten and model this with place value equipment.

**Q1: **

Make a ten to find .

**Q2: **

Ethan has 69 marbles. His friend gives him 4 more. How many marbles does he have now?

**Q3: **

Calculate .

*Tip*: Use the place value blocks if you need to.

**Q4: **

Which model represents ?

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**Q5: **

Write the addition equation that matches the model.

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**Q6: **

James is using base ten blocks to help him add 9 to 34.

He adds the ones first. There are 13 ones.

Pick the model that shows what he should do.

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Find the sum.

**Q7: **

Pick a model that shows the sum.

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

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**Q9: **

Using the base ten blocks, calculate .

**Q10: **

Using the given model, find .

**Q11: **

A restaurant buys 16 kilograms of potatoes, and then it buys 4 more. What is the total number of kilograms that the restaurant buys?

**Q12: **

Pick the model that shows the result of .

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