Math Problem Statement

In 8-11, find each quotient: 8. (3/4) ÷ (2/3), 9. (3/12) ÷ (1/8), 10. (1/2) ÷ (4/5), 11. (7/10) ÷ (5/2)

Solution

The image shows a set of division problems involving fractions. The instructions state: "In 8-11, find each quotient." Let’s solve them one by one.

Problem 8: 34÷23\frac{3}{4} \div \frac{2}{3}

To divide by a fraction, multiply by its reciprocal: 34÷23=34×32=3×34×2=98\frac{3}{4} \div \frac{2}{3} = \frac{3}{4} \times \frac{3}{2} = \frac{3 \times 3}{4 \times 2} = \frac{9}{8}

Problem 9: 312÷18\frac{3}{12} \div \frac{1}{8}

312÷18=312×81=3×812=2412=2\frac{3}{12} \div \frac{1}{8} = \frac{3}{12} \times \frac{8}{1} = \frac{3 \times 8}{12} = \frac{24}{12} = 2

Problem 10: 12÷45\frac{1}{2} \div \frac{4}{5}

12÷45=12×54=1×52×4=58\frac{1}{2} \div \frac{4}{5} = \frac{1}{2} \times \frac{5}{4} = \frac{1 \times 5}{2 \times 4} = \frac{5}{8}

Problem 11: 710÷52\frac{7}{10} \div \frac{5}{2}

710÷52=710×25=7×210×5=1450=725\frac{7}{10} \div \frac{5}{2} = \frac{7}{10} \times \frac{2}{5} = \frac{7 \times 2}{10 \times 5} = \frac{14}{50} = \frac{7}{25}

Would you like detailed step-by-step explanations for any of these problems?

Relative Questions:

  1. How do you find the reciprocal of a fraction?
  2. What is the general method for dividing fractions?
  3. Can a fraction be simplified further? How do you determine that?
  4. What is the difference between dividing and multiplying fractions?
  5. When dividing by a fraction, why do we multiply by the reciprocal?

Tip:

Always simplify fractions to their lowest terms after performing operations to make the final answer clearer and more concise.

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Math Problem Analysis

Mathematical Concepts

Division of fractions
Reciprocal of a fraction
Simplifying fractions

Formulas

a ÷ b = a × (1/b)
Simplify fractions by dividing the numerator and denominator by their greatest common factor (GCF)

Theorems

Reciprocal Rule: To divide by a fraction, multiply by its reciprocal.

Suitable Grade Level

Grade 5-6