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Math – Addition with Regrouping

Math · CCSS: 3.NBT.A.2 · Level 3 · Worksheet 2 of 5 · Practice Set 2
Level 3 ⭐⭐⭐
Practice SetsSet 1Set 2Set 3Set 4Set 5Set 6Set 7Set 8Set 9Set 10
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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:
Problem Ones (+ carry?) Tens Answer
16 + 15
24 + 38
47 + 29
2 Practice: Does it Need Regrouping?
🤔 First decide: does this problem need regrouping? Then solve.
Problem Regrouping? (Y/N) Answer
24 + 15
32 + 26
38 + 42
53 + 17
26 + 31
49 + 25
3 Word Problems with Regrouping
📝 Solve each word problem. Show your work!
Problem Equation Answer
Ella counted 27 ladybugs and 45 ants at the park. How many bugs did she count?
A team scored 38 points in the first game and 26 in the second. How many points in all?
Marcus has 49 baseball cards and gets 25 more. How many cards does he have now?
4 Challenge: Three Addends
🏆 Add three numbers together. You may need to regroup more than once!
Problem Answer
14 + 17 + 11 =
22 + 18 + 25 =
31 + 29 + 16 =
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 2.
10 + 6 =
17 - 4 =
5 × 3 =
⭐ Great job with math today!
Math · Level 3 · Worksheet 2
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