Examples with solutions for Multiplication of Fractions: Reducing the fraction

Exercise #1

16×23= \frac{1}{6}\times\frac{2}{3}=

Video Solution

Step-by-Step Solution

To solve the problem, we will calculate the product of the fractions 16 \frac{1}{6} and 23 \frac{2}{3} using the standard method for multiplying fractions.

Step 1: Multiply the numerators.
The numerators are 1 and 2. Thus, the product of the numerators is 1×2=2 1 \times 2 = 2 .

Step 2: Multiply the denominators.
The denominators are 6 and 3. Thus, the product of the denominators is 6×3=18 6 \times 3 = 18 .

Step 3: Form the resulting fraction from the products obtained in the previous steps.
This gives us the fraction 218 \frac{2}{18} .

Step 4: Simplify the fraction.
To simplify 218 \frac{2}{18} , find the greatest common divisor (GCD) of 2 and 18, which is 2. Divide both the numerator and the denominator by their GCD:
2÷218÷2=19 \frac{2 \div 2}{18 \div 2} = \frac{1}{9}

Therefore, the simplified result of 16×23 \frac{1}{6} \times \frac{2}{3} is 19 \frac{1}{9} .

We compare this result with the multiple-choice options and confirm that the correct answer is:

19 \frac{1}{9}

Answer

19 \frac{1}{9}

Exercise #2

25×12= \frac{2}{5}\times\frac{1}{2}=

Video Solution

Step-by-Step Solution

To solve this problem, let's multiply the fractions 25 \frac{2}{5} and 12 \frac{1}{2} .

Step 1: Multiply the numerators:
2×1=2 2 \times 1 = 2

Step 2: Multiply the denominators:
5×2=10 5 \times 2 = 10

Step 3: Construct the fraction using the products from steps 1 and 2:
210 \frac{2}{10}

Step 4: Simplify the fraction. We can divide both the numerator and the denominator by their greatest common divisor, which is 2:
2÷210÷2=15 \frac{2 \div 2}{10 \div 2} = \frac{1}{5}

Thus, the product of 25 \frac{2}{5} and 12 \frac{1}{2} is 15 \frac{1}{5} .

Therefore, the solution to the problem is 15 \frac{1}{5} .

Answer

15 \frac{1}{5}

Exercise #3

24×45= \frac{2}{4}\times\frac{4}{5}=

Video Solution

Step-by-Step Solution

To solve the problem of multiplying the fractions 24\frac{2}{4} and 45\frac{4}{5}, follow these steps:

  • Step 1: Multiply the numerators. We have the numerators 22 and 44, so we calculate 2×4=82 \times 4 = 8.
  • Step 2: Multiply the denominators. We have the denominators 44 and 55, so we calculate 4×5=204 \times 5 = 20.
  • Step 3: Form the new fraction using the results from Steps 1 and 2. This gives us 820\frac{8}{20}.
  • Step 4: Simplify the fraction 820\frac{8}{20}. The greatest common divisor (GCD) of 88 and 2020 is 44.
  • Step 5: Divide both the numerator and the denominator by their GCD, 44: 8÷420÷4=25 \frac{8 \div 4}{20 \div 4} = \frac{2}{5}.

Therefore, the simplified product of 24\frac{2}{4} and 45\frac{4}{5} is 25\frac{2}{5}.

Answer

25 \frac{2}{5}

Exercise #4

23×14= \frac{2}{3}\times\frac{1}{4}=

Video Solution

Step-by-Step Solution

To solve the problem of multiplying the fractions 23\frac{2}{3} and 14\frac{1}{4}, we will follow these steps:

  • Step 1: Multiply the numerators of the fractions.
  • Step 2: Multiply the denominators of the fractions.
  • Step 3: Simplify the resulting fraction if necessary.

Let's begin solving the problem:

Step 1: Multiply the numerators:
2×1=22 \times 1 = 2.

Step 2: Multiply the denominators:
3×4=123 \times 4 = 12.

Putting these together, the product of the fractions is:
212\frac{2}{12}.

Step 3: Simplify the fraction 212\frac{2}{12}. Both the numerator and the denominator are divisible by 2:
Divide the numerator and denominator by 2:
2÷212÷2=16 \frac{2 \div 2}{12 \div 2} = \frac{1}{6} .

Therefore, the product of 23\frac{2}{3} and 14\frac{1}{4} simplifies to 16\frac{1}{6}.

From the given choices, the correct answer is choice 3: 16 \frac{1}{6} .

Answer

16 \frac{1}{6}

Exercise #5

24×12= \frac{2}{4}\times\frac{1}{2}=

Video Solution

Step-by-Step Solution

To solve this multiplication of fractions problem, we will follow these steps:

  • Step 1: Multiply the numerators of the fractions.
  • Step 2: Multiply the denominators of the fractions.
  • Step 3: Simplify the resulting fraction, if possible.

Now, let's carry out these steps:
Step 1: Multiply the numerators: 2×1=2 2 \times 1 = 2 .
Step 2: Multiply the denominators: 4×2=8 4 \times 2 = 8 .
Step 3: The resulting fraction is 28 \frac{2}{8} . We simplify by dividing the numerator and the denominator by their greatest common divisor, which is 2. So, 28=2÷28÷2=14\frac{2}{8} = \frac{2 \div 2}{8 \div 2} = \frac{1}{4}.

Therefore, the solution to the problem is 14 \frac{1}{4} .

Answer

14 \frac{1}{4}

Exercise #6

23×34= \frac{2}{3}\times\frac{3}{4}=

Video Solution

Step-by-Step Solution

To solve this problem, follow these steps:

  • Step 1: Multiply the numerators of the fractions. The numerators are 2 2 and 3 3 .
  • Step 2: Multiply the denominators of the fractions. The denominators are 3 3 and 4 4 .
  • Step 3: Simplify the resulting fraction if necessary.

Now, let us perform the multiplication:

Step 1: Multiply the numerators:

2×3=6 2 \times 3 = 6

Step 2: Multiply the denominators:

3×4=12 3 \times 4 = 12

So, the product of the fractions is:

612 \frac{6}{12}

Step 3: Simplify the fraction. To simplify, find the greatest common divisor (GCD) of 6 and 12, which is 6. Divide both numerator and denominator by 6:

6÷612÷6=12 \frac{6 \div 6}{12 \div 6} = \frac{1}{2}

Therefore, the simplified product of the fractions 23×34 \frac{2}{3} \times \frac{3}{4} is 12 \frac{1}{2} .

This matches choice 4, which is 12 \frac{1}{2} .

Answer

12 \frac{1}{2}

Exercise #7

68×56= \frac{6}{8}\times\frac{5}{6}=

Video Solution

Step-by-Step Solution

To solve this problem, we'll multiply the fractions and simplify the result:

  • Step 1: Multiply the numerators together: 6×5=30 6 \times 5 = 30 .
  • Step 2: Multiply the denominators together: 8×6=48 8 \times 6 = 48 .
  • Step 3: Write the result as a single fraction: 3048 \frac{30}{48} .
  • Step 4: Simplify the fraction by finding the GCD of 30 and 48, which is 6.
  • Step 5: Divide both the numerator and the denominator by their GCD:

30÷648÷6=58 \frac{30 \div 6}{48 \div 6} = \frac{5}{8}

Therefore, the solution to the problem is 58 \frac{5}{8} .

Answer

58 \frac{5}{8}