Multiplying improper fractions and mixed numbers

Intros
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Lessons
  1. Simplify fractions: Method A - By using greatest common factors
  2. Simplify fractions: Method B - By using common factors
  3. How to multiply fractions with cross-cancelling?
  4. How to convert between mixed numbers and improper fractions?
  5. How to multiply improper fractions and mixed numbers?
Examples
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Lessons
  1. Multiplying Improper Fractions and Mixed Numbers Using Area Models
    Use an area model to find each product.
    1. 13×213\frac{1}{3} \times 2\frac{1}{3}
    2. 114×1121\frac{1}{4} \times 1\frac{1}{2}
    3. 215×1162\frac{1}{5} \times 1\frac{1}{6}
  2. Multiply Improper Fractions and Mixed Numbers Involving Single-digit Numbers
    Estimate and calculate each product.
    1. 323×1143\frac{2}{3} \times 1\frac{1}{4}
    2. 74×138\frac{7}{4} \times \frac{{13}}{8}
    3. 225×62\frac{2}{5} \times 6
  3. Word Problems: Multiplying Improper Fractions and Mixed Numbers
    Three and a half rolls of wrapping paper are needed to wrap 10 presents. How many rolls of wrapping paper are needed to wrap 25 presents?