Addition Within 10: Games, Strategies & Worksheet
Adding within 10 means adding two numbers whose total is 10 or less, like 3 + 4 or 6 + 2. These facts are the building blocks of all mental maths.
➕ Play the addition within 10 game 🖨️ Printable worksheet
Tricks that make it easier
- Start with the bigger number and count on: 2 + 7 → start at 7, count 8, 9.
- Learn doubles: 3 + 3, 4 + 4, 5 + 5.
- Use fingers or objects at first, then picture them in your head.
Try these
- 4 + 0 =
Answer
4 - 2 + 3 =
Answer
5 - 5 + 5 =
Answer
10 - 0 + 8 =
Answer
8 - 1 + 4 =
Answer
5 - 1 + 5 =
Answer
6
Common mistakes
- Counting the starting number again when counting on.
- Always starting from the first number instead of the bigger one.
- Guessing instead of using a known fact or bond.
A five-day practice plan
| Day | What to do (10 minutes) |
|---|---|
| Day 1 | Play Addition Adventure on this skill for 5–10 minutes. Read the explanation after every mistake. |
| Day 2 | Learn one trick from this page and use it out loud while you play. |
| Day 3 | Print the worksheet and try it without help. Mark it with the answer key together. |
| Day 4 | Play again and try to beat your personal best score or get three stars. |
| Day 5 | Mix it up: try the ⏱️ Timed test, or ask your child to explain the skill to you in their own words. |
Suits Foundation and Year 1.
Frequently asked questions
What does addition within 10 mean?
It means adding numbers where the total is 10 or less.
How can I help my child get faster at addition?
Practise a few minutes every day with games and number bonds, and encourage strategies like counting on from the bigger number and bridging through 10 instead of counting from one.
Is there a printable version?
Yes. The free addition within 10 worksheet has 30 questions and an answer key, and you can make a new set in one click.