📝 Practice Worksheets
🛠️ Related Tools
🔑 Key Concepts
- To multiply fractions, multiply the numerators and multiply the denominators.
- Cross-cancellation can simplify the problem before multiplying.
- Cross-cancellation only works between a numerator and a denominator.
- Mixed numbers must be renamed as improper fractions before multiplying.
- Final answers should be simplified, and improper fractions can be renamed as mixed numbers when appropriate.
✏️ Worked Examples – Multiplying Fractions With Cross-Cancellation
🧠 Math Vocabulary
- Cross-cancellation: simplifying a numerator and a denominator before multiplying.
- Improper fraction: a fraction with a numerator greater than or equal to the denominator.
- Mixed number: a whole number and a fraction written together.
- Simplest form: a fraction reduced as much as possible.
- Product: the answer to a multiplication problem.
💡 Main Idea
This lesson focuses on multiplying fractions efficiently by simplifying before multiplying. Students see that cross-cancellation can make the arithmetic easier, especially when working with larger numbers or multiple factors. The video also connects fraction multiplication to finding a fraction of a number and extends the idea to mixed numbers.
📚 What You Should Already Know
Before watching this video, students should understand how to multiply whole numbers, simplify fractions, and rename mixed numbers as improper fractions. It also helps if they already know that “of” in a word problem often means multiplication.
🚀 What Comes Next
After multiplying fractions and mixed numbers, students can move into fraction word problems, scaling quantities, area involving fractional side lengths, and eventually dividing fractions using related reasoning about reciprocals and multiplication.
🧩 Embed This Video in Your LMS
Teachers can embed this YouTube video directly into Canvas, Google Classroom, Schoology, or another learning platform. Click below to show the embed code.