Addition sentences – sums up to 10
key notes :
🔢 What is an Addition Sentence?
An addition sentence shows two or more numbers joined together to make a total.
Example: 3 + 2 = 5 ✨
➕ Parts of an Addition Sentence
- Addends → The numbers being added (ex: 4 and 5) 🟦🟩
- Plus sign (+) → Means “add” ➕
- Equal sign (=) → Shows the answer 💡
- Sum → The total (ex: 4 + 5 = 9) 🎉
🍎 Using Objects to Add
Students can use:
🍏 apples, 🔵 counters, 🧱 blocks, 🖍 crayons
Example:
🧱🧱🧱 + 🧱🧱 = 5 blocks
🧠 Make 10 Strategy
Ways to make 10 easily:
- 1 + 9 = 10
- 2 + 8 = 10
- 3 + 7 = 10
- 4 + 6 = 10
- 5 + 5 = 10
🎯 Helps in quick mental math!
✍️ Write Addition Sentences from Pictures
If a picture shows:
🐶🐶🐶 and 🐶🐶
Addition sentence → 3 + 2 = 5
🎨 Use Number Bonds
Number bonds help students see how two parts make one whole.
Example:
⭕ Whole: 10
🟣 Parts: 6 and 4
Sentence → 6 + 4 = 10
🤝 Order Doesn’t Change the Sum
This is called Commutative Property:
3 + 7 = 10
7 + 3 = 10
Same sum! 🎈
📝 Check Your Work
✔ Count objects again
✔ Use fingers if needed
✔ Think: “Does this make 10 or less?”
✔ Rewrite if not sure 🧩
🎉 Practice Writing Sums Up to 10
Examples:
4 + 1 = 5
6 + 3 = 9
2 + 7 = 9
5 + 5 = 10
8 + 1 = 9
🌟 Addition is Joining!
Anytime we put things together, we are doing addition.
Easy and fun! 😄✨
Learn with an example
Which picture shows 2 + 1 = 3?
Look at this picture:
Count the blue jigsaw puzzle pieces. There are 2 blue jigsaw puzzle pieces. Count the orange jigsaw puzzle pieces. There is 1 orange jigsaw puzzle piece.
Now count all the jigsaw puzzle pieces together. There are 3 jigsaw puzzle pieces. This picture shows 2 + 1 = 3
This picture shows 3 + 1 = 4:
This picture shows 1 + 1 = 2:
This picture shows 2 + 2 = 4:
Write an addition number sentence based on the picture (for example, 2 + 1 = 3).
- First, count the yellow jigsaw puzzle pieces. There are 6 yellow jigsaw puzzle pieces.
- Next, count the pink jigsaw puzzle pieces. There are 4 pink jigsaw puzzle pieces.
- The first part of the addition number sentence is 6 + 4. To find the sum, count all of the jigsaw puzzle pieces together. There are 10 jigsaw puzzle pieces. The addition number sentence is 6 + 4 = 10.
Write an addition number sentence based on the picture (for example, 2 + 1 = 3).
First, count the pink jigsaw puzzle pieces. There are 4 pink jigsaw puzzle pieces.
Next, count the yellow jigsaw puzzle pieces. There are 3 yellow jigsaw puzzle pieces.
The first part of the addition number sentence is 4 + 3. To find the sum, count all of the jigsaw puzzle pieces together. There are 7 jigsaw puzzle pieces. The addition number sentence is 4 + 3 = 7.
Let’s practice!🖊️
