Math Problem Statement

Fractions divided

Solution

When dividing fractions, you follow a simple rule: Multiply by the reciprocal of the second fraction.

Here’s how to do it step-by-step:

  1. Write down the division problem: For example, ab÷cd\frac{a}{b} \div \frac{c}{d}.
  2. Find the reciprocal of the second fraction: The reciprocal of cd\frac{c}{d} is dc\frac{d}{c}.
  3. Multiply the first fraction by the reciprocal: So, you multiply ab×dc\frac{a}{b} \times \frac{d}{c}.
  4. Simplify the result if possible.

Example:

Let’s divide 23÷45\frac{2}{3} \div \frac{4}{5}.

  1. Write it as 23÷45\frac{2}{3} \div \frac{4}{5}.
  2. The reciprocal of 45\frac{4}{5} is 54\frac{5}{4}.
  3. Now multiply: 23×54=2×53×4=1012.\frac{2}{3} \times \frac{5}{4} = \frac{2 \times 5}{3 \times 4} = \frac{10}{12}.
  4. Simplify the fraction: 1012=56\frac{10}{12} = \frac{5}{6}.

So, 23÷45=56\frac{2}{3} \div \frac{4}{5} = \frac{5}{6}.

Would you like a more detailed explanation of any part of this process? Or do you have a specific problem to solve?

Further questions to explore:

  1. How do you divide fractions when one of them is a whole number?
  2. What happens if one of the fractions is improper?
  3. How do you convert a mixed number into an improper fraction for division?
  4. Can you divide fractions with negative numbers?
  5. How do you simplify fractions before or after division?

Tip: Always simplify the final fraction if possible, by finding the greatest common divisor (GCD) of the numerator and denominator!

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Math Problem Analysis

Mathematical Concepts

Fractions
Reciprocal
Multiplication of Fractions
Simplification

Formulas

a/b ÷ c/d = a/b × d/c

Theorems

Multiplying fractions by the reciprocal of the second fraction

Suitable Grade Level

Grades 4-6