Adding 1

key notes :

Key Points:
  • Adding means putting together.
  • When we add 1, we are increasing the number by just one more.
  • Adding 1 is like counting the next number.
  • Example: 4 + 1 = 5 (next number after 4 is 5).
🔹 Examples:
  • 1 + 1 = 2
  • 2 + 1 = 3
  • 5 + 1 = 6
  • 7 + 1 = 8
🔹 Trick to Remember:

👉 Adding 1 means “go to the next number” on the number line.

📍 Number line example:

0 → 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 → 9 → 10
  • If you are on 3, and add 1, you move to 4.
🔹 Practice Time:
  1. 6 + 1 = ___
  2. 9 + 1 = ___
  3. 10 + 1 = ___
  4. 4 + 1 = ___
  5. 8 + 1 = ___

🔹 Real-Life Examples:
  • 🍎 You have 2 apples, and you get 1 more → Now you have 3 apples.
  • 🐶 There are 4 dogs, and 1 more comes → Now there are 5 dogs.

Learn with an example

🗼 Add. 0+1=

When you add 0 to a number, the number stays the same.

0+1=1

🗼 Add. 6+1=

  • You can count on to find 6+1.
  • Start at 6 and count on 1 time.
  • You end at 7.
  • 6+1=7

🗼 Add. 1+4=

  • You can count on to find 1+4.
  • It is easier to start with the larger number. So, start at 4. Count on 1 time.
  • You end at 5.
  • 1+4=5

Let’s practice!