Adding 3

Key notes:

Key Points
  • Addition means putting together.
  • When we add 3, we increase the number by three.
  • We can use fingers, objects, or number lines to add 3.
  • The answer we get is called the sum.
🧮 Examples
  • Using Numbers
  • 2 + 3 = 5
  • 4 + 3 = 7
  • 6 + 3 = 9
  • Using Objects
    🍎🍎 + 🍎🍎🍎 = 🍎🍎🍎🍎🍎
    (2 apples + 3 apples = 5 apples)
  • Using Number Line
    👉 Start at 5, move 3 steps forward → Land on 8
    So, 5 + 3 = 8
🖍️ Practice Questions
  1. 1 + 3 = ___
  2. 7 + 3 = ___
  3. 10 + 3 = ___
  4. 5 + 3 = ___
  5. 9 + 3 = ___
✅ Quick Facts
  • Adding 3 always makes the number 3 bigger.
  • You can count on three steps forward to get the answer.

Learn with an example

🗼 Add . 4 + 3 =

  • You can count on to find 4 + 3 .
  • Start at 4 and count on 3 times.
  • You end at 7.
  • 4 + 3 = 7

🗼 Add . 3 + 0 =

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

3 + 0 = 3

🗼 Add. 2 + 3 =

  • You can count on to find 2 + 3.
  • It is easier to start with the larger number. So, start at 3. Count on 2 times.
  • You end at 5.
  • 2 + 3 = 5

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  • You can also add using doubles plus one.
  • Remember the doubles fact 2 + 2 = 4.
  • Notice that 2 + 3 is 1 more. That makes 5.
  • 2 + 3 = 5

Let’s practice!