6) Fractions: Multiply ~ Real-World Problems
5.NF.B.6: Multiply fractions times other fractions and mixed numbers
5.NF.B.6: Multiply fractions times other fractions and mixed numbers
I can solve real world problems that involve multiplication of fractions and mixed numbers.
The following 3 videos show you how to solve real-world problems that require multiplying fractions. Video: Muffins! Video: Laundry! Video (fraction × a mixed #): Bike Practice: Real-World Problems Where You Multiply Fractions & Mixed Numbers Examples 1) At Orion Elementary School, 1/5 of the students are on the Honor Roll. Of Honor Roll students, 1/4 are fifth graders. What fraction of the whole school are fifth grade Honor Roll students? Show a fraction model and an equation as part of your work. 2) A recipe for brownies requires 3 1/4 cups of flour.
If you only need to make half of the recipe, how many cups of flour will you need? Here's one way to solve this: 3 1/4 = 3 + 1/4 Distribute: (1/2 × 3) + (1/2 × 1/4) 1/2 × 3 = 1 1/2 and 1/2 × 1/4 = 1/8 1 1/2 + 1/8 = 1 4/8 + 1/8 = 1 5/8 cups of flour |
If you'd like to read the CA State Standard...
6. Solve real-world problems involving multiplication of fractions and mixed numbers, e.g., by using visual fraction models or equations to represent the problem. |