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Math – Addition with Regrouping

Math · CCSS: 3.NBT.A.2 · Level 3 · Worksheet 2 of 5 · Practice Set 5

Level 3 ⭐⭐⭐

1 What is Regrouping?

📦 When the ones column adds up to 10 or more, you "regroup" (carry) to the tens column.

Example: 27 + 15

Step 1: Add the ones: 7 + 5 = 12 → Write 2, carry the 1

Step 2: Add the tens: 2 + 1 + 1(carried) = 4 → Answer: 42

Try these step by step:

2 Practice: Does it Need Regrouping?

🤔 First decide: does this problem need regrouping? Then solve.

3 Word Problems with Regrouping

📝 Solve each word problem. Show your work!

Problem	Equation	Answer
A garden has 34 tulips and 57 daisies. How many flowers are in the garden?
Kenji built a tower with 46 red blocks and 38 blue blocks. How many blocks did he use?
The class recycled 29 bottles and 63 cans. How many items did they recycle?

4 Challenge: Three Addends

🏆 Add three numbers together. You may need to regroup more than once!

5 Explain Your Thinking (SBA Practice)

Show your work and explain how you solved the problem. On the state test, you will need to explain your reasoning.

Problem: Sam has 347 stickers. He gets 285 more. How many stickers does Sam have now? Show your regrouping.

My work:

My answer:

How I know my answer is correct:

+ Bonus Math Practice

Try one extra round for Set 5.

25 + 6 =

32 - 4 =

5 × 6 =