Mathematics Grade 5 15 min

Multiply two mixed numbers

Multiply two mixed numbers

Tutorial Preview

1

Introduction & Learning Objectives

Learning Objectives Define mixed numbers and improper fractions. Convert mixed numbers into improper fractions. Multiply two improper fractions. Convert an improper fraction product back into a mixed number. Simplify fraction products to their lowest terms. Solve word problems involving the multiplication of two mixed numbers. Ever wondered how to figure out the total amount of ingredients needed if a recipe calls for 2½ cups of flour and you want to make 1½ times the recipe? 🥧 Let's find out! In this lesson, you'll learn a powerful way to multiply numbers that have both a whole part and a fraction part, called mixed numbers. This skill is super useful for cooking, building, and many everyday situations where things aren't always whole numbers. Real-World A...
2

Key Concepts & Vocabulary

TermDefinitionExample Mixed NumberA number that combines a whole number and a fraction.3½ (three and a half), 1¾ (one and three-quarters) Improper FractionA fraction where the numerator (top number) is greater than or equal to the denominator (bottom number).⁷⁄₂ (seven halves), ⁵⁄₄ (five quarters) NumeratorThe top number in a fraction, which tells you how many parts of the whole you have.In the fraction ⁵⁄₈, 5 is the numerator. DenominatorThe bottom number in a fraction, which tells you how many equal parts the whole is divided into.In the fraction ⁵⁄₈, 8 is the denominator. ProductThe answer you get when you multiply two or more numbers.The product of 2 and 3 is 6. Simplify (Reduce)To make a fraction as simple as possible by dividing both the numerator and the denominator by their greate...
3

Core Formulas

Converting a Mixed Number to an Improper Fraction $A \frac{B}{C} = \frac{(A \times C) + B}{C}$ To multiply mixed numbers, you must first convert each mixed number into an improper fraction. Multiply the whole number by the denominator, then add the numerator. Keep the original denominator. Multiplying Fractions $\frac{a}{b} \times \frac{c}{d} = \frac{a \times c}{b \times d}$ Once both mixed numbers are improper fractions, multiply the numerators together to get the new numerator, and multiply the denominators together to get the new denominator. Converting an Improper Fraction to a Mixed Number $\frac{\text{Numerator}}{\text{Denominator}} = \text{Quotient} \frac{\text{Remainder}}{\text{Denominator}}$ After multiplying, if your answer is an improper fraction, divide t...

5 more steps in this tutorial

Sign up free to access the complete tutorial with worked examples and practice.

Sign Up Free to Continue

Sample Practice Questions

Challenging
What is the product of 1 1/2 × 1 1/3 × 1 1/4?
A.1 1/24
B.3 1/2
C.2 1/2
D.2 3/4
Challenging
A small box has a rectangular base with an area of 5 1/4 square inches. If the height of the box is 2 2/3 inches, what is its volume in cubic inches?
A.10 2/12 cubic inches
B.13 1/2 cubic inches
C.14 cubic inches
D.15 1/4 cubic inches
Challenging
A student solved 3 1/2 × 2 1/4 and got the answer 6 1/8. The tutorial's area problem shows the correct answer is 7 7/8. Based on the 'Common Pitfalls' section, what mistake did the student most likely make?
A.They forgot to simplify their final answer.
B.They multiplied the whole numbers and the fractions separately.
C.They converted the mixed numbers to improper fractions incorrectly.
D.They added the numbers instead of multiplying.

Want to practice and check your answers?

Sign up to access all questions with instant feedback, explanations, and progress tracking.

Start Practicing Free

More from Multiply fractions

Ready to find your learning gaps?

Take a free diagnostic test and get a personalized learning plan in minutes.