Understanding Number Sentences
Hello math explorer!
Today we're going to be sign detectives! We'll look at number sentences with missing signs and figure out whether a plus (+) or minus (-) makes the sentence true. It's like solving a fun puzzle!
How to Find the Right Sign
1️⃣ Read the whole number sentence carefully
2️⃣ Try both signs in the empty space
3️⃣ Check which one makes the sentence correct
Let's Practice Together!
Example 1: The Cookie Mystery
Sam had 5 cookies. He ate some and now has 2 left. Which sign belongs in the sentence?
5 ? 3 = 2
Example 2: Balloon Party
There were 7 balloons at the party. 4 more arrived. Which sign completes the sentence?
7 ? 4 = 11
Parent Tips 🌟
- Use real objects: Have your child act out problems with toys or snacks to make it concrete.
- Think aloud: Model your thinking process when solving similar problems to show how you decide between + and -.
- Make it a game: Create flashcards with number sentences and race to hold up the correct sign.