🔑 Key Concepts
- Dividing by a fraction means multiplying by its reciprocal.
- A whole number can be written as a fraction with denominator 1.
- Change the division sign to multiplication after finding the reciprocal.
- Multiplying by a reciprocal tells how many fractional parts fit into a whole number.
- The answer to a division problem is called the quotient.
✏️ Worked Examples – Add Mixed Numbers With Same and Different Signs
💡 Main Idea
Dividing a whole number by a fraction tells how many fractional parts fit into that number. This is why the division sign changes to multiplication when we use the reciprocal.
📚 What You Should Already Know
Students should understand multiplication of fractions, the meaning of a reciprocal, and how to rewrite whole numbers as fractions.
🚀 What Comes Next
After dividing whole numbers by fractions, students will divide fractions by fractions, solve real-world word problems, and apply these skills using mental math and visual models.