Ways to make a number using addition
key notes :
🔢 A Number Can Be Made in Many Ways
- We can add different pairs of numbers to make the same total.
- Example: 5 = 2 + 3 = 4 + 1 = 0 + 5 ✨
➕ Order Doesn’t Change the Sum
Changing the order of numbers does not change the answer.
Example:
- 3 + 4 = 7
- 4 + 3 = 7
This is called the Commutative Property 😊
🧮 Use Number Partners (Number Bonds)
Number bonds help us see two parts that make a whole.
Example for 8:
- 8 = 5 + 3
- 8 = 6 + 2
- 8 = 7 + 1
- 8 = 4 + 4
These are called “partners of 8” 🧩
🎨 Use Objects, Pictures, or Fingers
Students can find different ways using:
🟢 Counters
🔵 Beads
🔴 Buttons
🟡 Drawings
🖐️ Fingers
Helps them see the parts clearly!
🌈 Zero Doesn’t Change the Number
- Adding 0 keeps the number the same.
- Example: 9 = 9 + 0 💛
🧠 Try All Possible Combinations
To fully understand a number, try making it in as many ways as possible.
Example for 10:
- 10 = 1 + 9
- 10 = 2 + 8
- 10 = 3 + 7
- 10 = 4 + 6
- 10 = 5 + 5 🎉
📝 Addition Sentences Help Us Show Our Thinking
Example:
- “I used 4 red balls and 3 blue balls.
So, 4 + 3 = 7.” 🏀🔵
🌟 Addition Makes Numbers Bigger
- Adding means we are joining two groups.
- The total will be equal to or greater than the biggest part.
- Example: 6 + 2 = 8 📈
Learn with an example
Which is not a way to make 72?
- 71 + 1
- 59 + 3
- 64 + 8
- 65 + 7
This is not a way to make 72:
- 59 + 3 = 62
These are ways to make 72:
- 71 + 1 = 72
- 64 + 8 = 72
- 65 + 7 = 72
Select all of the ways to make 57.
- 49 + 7
- 51 + 6
- 56 + 2
- 53 + 3
This is a way to make 57:
- 51 + 6 = 57
These are not ways to make 57:
- 49 + 7 = 56
- 56 + 2 = 58
- 53 + 3 = 56
Which is not a way to make 74?
- 68 + 6
- 65 + 9
- 73 + 1
- 76 + 8
This is not a way to make 74:
- 76 + 8 = 84
These are ways to make 74:
- 68 + 6 = 74
- 65 + 9 = 74
- 73 + 1 = 74
Let’s practice!🖊️
