Study Guide
Addition with Regrouping
Shows Year 3 students how to add two-digit numbers when the ones add up to ten or more, using column addition with a carried ten and the…
- Difficulty
- Level 1 · Easier
- Time
- 10 min
WorksheetYear 3Level 1 · Easier
Free Year 3 Missing Numbers in Number Sentences Worksheet — Level 1
Find the missing number in addition and subtraction number sentences, using the link between them. Builds confidence with the core skill before adding complexity. This Year 3 worksheet has 12 questions and comes with a full answer sheet showing the working for every question.
Need more practice? Practice Set 2 · Practice Set 3 · Practice Set 4 — same skill, fresh questions, full answers.
Instant download · No sign-up · Free for personal, classroom and homeschool use
- Year
- Year 3
- Subject
- Maths
- Topic
- Addition
- Difficulty
- Level 1 · Easier
- Estimated time
- 10 minutes
- Curriculum
- New Zealand Curriculum
- Questions
- 12
- Answers
- Included, with working
- Format
- PDF (A4), print or complete online
Students will practise
- finding missing numbers
- using the inverse relationship between addition and subtraction
- checking answers
Curriculum: New Zealand Curriculum. We show specific outcome codes only where they have been verified against the official curriculum document.
What's next?
Completed: Year 3 Missing Numbers in Number Sentences Worksheet — Level 1
How to use this worksheet
- Print the PDF or complete it on screen. Write the student's name and date at the top.
- Read the instructions for each part together before starting. Encourage working to be shown, not just answers.
- Mark with the answer sheet. Compare the method, not only the final answer, and give credit for correct working.
- Record the score, celebrate what went well, then follow the "What's next" suggestion.
Common questions
Who is this worksheet for?
Year 3 students (typically ages 7–8) working on addition. It is pitched at level 1 · easier; an easier version and a harder version are linked above.
Are the answers included?
Yes. The PDF includes a full answer sheet with the working for every question. You can also view the answers online.
How long does it take?
About 10 minutes for 12 questions. Short, regular sessions work best: two or three a week beats one long one.
Do I need to sign up to download?
No. Click Download Free PDF and it opens immediately. It is free for personal, classroom and homeschool use.
What should we do next?
Try Year 3 Missing Numbers in Number Sentences Worksheet — Level 2.
Preview
Success TutoringWorksheetsYear 3 · Mathematics · AdditionYear 3 Missing Numbers in Number Sentences Worksheet — Level 1
Name
Date
Score /
Write the missing number. Use addition to check subtraction, and subtraction to check addition.
1. (answer space) + 2 = 20
2.3 + (answer space) = 12
3. (answer space) − 6 = 3
4. (answer space) + 3 = 11
5. (answer space) − 6 = 1
6.15 + (answer space) = 16
7. (answer space) + 19 = 20
8.16 − (answer space) = 9
9. (answer space) − 5 = 6
10. (answer space) − 10 = 1
11.1 + (answer space) = 16
12.15 − (answer space) = 9
Preview — the PDF contains the full resource and answer sheet.
More Year 3 addition resources
- Worksheet
Year 3 Number Bonds Worksheet — Getting Started
Find the missing part that makes the whole: number bonds to 5, 10, 20 and 100. A gentle first step with small numbers and plenty of space.…
- Difficulty
- Getting started
- Time
- 10 min
- Questions
- 12 questions
- Answers
- Answers included
- Worksheet
Year 3 Number Bonds Worksheet — Level 1
Find the missing part that makes the whole: number bonds to 5, 10, 20 and 100. Builds confidence with the core skill before adding…
- Difficulty
- Level 1 · Easier
- Time
- 10 min
- Questions
- 12 questions
- Answers
- Answers included
- Worksheet
Year 3 Number Bonds Worksheet — Level 2
Find the missing part that makes the whole: number bonds to 5, 10, 20 and 100. Expected-level practice for this year group. This Year 3…
- Difficulty
- Level 2 · Standard
- Time
- 10 min
- Questions
- 12 questions
- Answers
- Answers included
- Worksheet
Year 3 Number Bonds Worksheet — Level 3
Find the missing part that makes the whole: number bonds to 5, 10, 20 and 100. A challenge set for students ready to stretch further. This…
- Difficulty
- Level 3 · Challenge
- Time
- 10 min
- Questions
- 12 questions
- Answers
- Answers included
- Worksheet
Year 3 Missing Numbers in Number Sentences Worksheet — Level 2
Find the missing number in addition and subtraction number sentences, using the link between them. Expected-level practice for this year…
- Difficulty
- Level 2 · Standard
- Time
- 10 min
- Questions
- 12 questions
- Answers
- Answers included
- Worksheet
Year 3 Missing Numbers in Number Sentences Worksheet — Level 3
Find the missing number in addition and subtraction number sentences, using the link between them. A challenge set for students ready to…
- Difficulty
- Level 3 · Challenge
- Time
- 10 min
- Questions
- 12 questions
- Answers
- Answers included
- Worksheet
Year 3 Addition Worksheet — Getting Started
Addition practice that scales from adding within 10 to multi-digit column addition with regrouping. A gentle first step with small numbers…
- Difficulty
- Getting started
- Time
- 15 min
- Questions
- 16 questions
- Answers
- Answers included
Addition in other year levels
- Year 2 Number Bonds Worksheet — Getting Started
Worksheet · Year 2 · Addition · Getting started
- Year 2 Number Bonds Worksheet — Level 1
Worksheet · Year 2 · Addition · Level 1 · Easier
- Year 4 Missing Numbers in Number Sentences Worksheet — Level 1
Worksheet · Year 4 · Addition · Level 1 · Easier
- Year 4 Missing Numbers in Number Sentences Worksheet — Level 2
Worksheet · Year 4 · Addition · Level 2 · Standard
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About this resource
- Created by
- Success Tutoring Maths Team
- Reviewed by
- Success Tutoring
- Last reviewed
- 1 October 2026
- How it was made
- Generated by checked procedures
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