Understanding Addition and Subtraction
Welcome to the world of bigger numbers!
Now that you're comfortable with smaller numbers, let's explore adding and subtracting numbers up to 100. These skills help us solve real-life problems like counting toys, sharing treats, or saving money!
How to Add and Subtract Bigger Numbers
1️⃣ Break it down: Split numbers into tens and ones (like 45 = 40 + 5)
2️⃣ Add/subtract tens: First work with the tens (40 + 30 = 70)
3️⃣ Add/subtract ones: Then work with the ones (5 + 3 = 8)
4️⃣ Combine them: Put them together (70 + 8 = 78)
Let's Practice Together!
Example 1: Number Bubble Challenge
Click the bubbles to add them up!
15
23
37
42
Current total: 0
Example 2: Cookie Jar Math
There are 68 cookies in the jar. Some get eaten or added. What's left?
Parent Tips 🌟
- Make it real: Use household items like coins, buttons, or cereal pieces to practice adding and subtracting groups of 10s and 1s.
- Play store: Set up a pretend store with prices under $1.00 and practice making change or adding purchases together.
- Daily challenges: Ask quick math questions throughout the day ("If you have 57 stickers and get 25 more, how many do you have?").