Understanding Fraction Subtraction
Fractions can be tricky, but models make them easier!
When fractions have different denominators (the bottom numbers), we can't subtract them directly.
First, we need to find a common denominator and make equivalent fractions. Visual models help us see
exactly what's happening when we subtract fractions!
How to Subtract Fractions with Models
1️⃣ Find a common denominator - The smallest number both denominators divide into
2️⃣ Create equivalent fractions - Make both fractions have the same denominator
3️⃣ Subtract the numerators - Keep the denominator the same
4️⃣ Simplify - Reduce the fraction if possible
Let's Practice with Models!
Example 1: \(\frac{3}{4} - \frac{1}{2}\)
Let's visualize this subtraction using fraction bars:
1. Common denominator for 4 and 2 is 4
2. \(\frac{1}{2}\) becomes \(\frac{2}{4}\)
3. \(\frac{3}{4} - \frac{2}{4} = \frac{1}{4}\)
Parent Tips 🌟
- Use real-world examples: Cut pizzas, pies, or chocolate bars to show how fractions work in everyday life.
- Make it hands-on: Use paper strips or LEGO bricks to create fraction models your child can manipulate.
- Connect to addition: Remind your child that subtraction is just "adding backwards" - the same rules apply!