# Lesson Worksheet: Adding Ones to Two-Digit Numbers without Regrouping Mathematics • 1st Grade

In this worksheet, we will practice adding a one-digit number to a two-digit number without crossing a ten and model this with place value equipment.

**Q3: **

Is , or ?

- A
- B
- C

**Q6: **

There should be the same number of blocks on each side of the equal sign. How many blocks should be in the empty square?

**Q7: **

Pick the model that shows the result of .

- A
- B
- C

**Q8: **

Find the missing number in the following:

**Q9: **

Look at the model to find .

**Q10: **

Find 43 plus 4.

**Q11: **

Find the missing number to make the equation correct.

**Q12: **

Calculate .

**Q13: **

On a computer game, Mia scored 64. Jackson scored 4 more than Mia. What was Jackson’s score?