Mixed Numbers

In this article, we will teach you the basics of everything you need to know about mixed numbers.
If you wish to delve deeper into a specific topic, you can access the corresponding extensive article.

Mixed Number and Fraction Greater Than 1

A fraction that is greater than 1 is a fraction whose numerator is larger than its denominator, this type of fractions can be converted into mixed numbers.

It is important that we remember similar topics:

How do you convert a mixed number to a fraction?

Multiply the whole number by the denominator.
To the obtained product, add the numerator. The final result will be the new numerator.
Nothing is changed in the denominator.

How do you convert an integer to a fraction?

The whole number is written in the numerator and the 1 in the denominator.

You can continue reading in these articles:

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\( 1:\frac{3}{4}= \)

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Mixed Numbers

Addition and Subtraction of Mixed Numbers

To add and subtract mixed numbers, we will act as follows:

First step

We will convert mixed numbers into fractions - fractions with numerator and denominator that do not have whole numbers.

Second step

We will find a common denominator (usually by multiplying the denominators).

Third step

We will add or subtract only the numerators. The denominator will be written only once in the final result.

Multiplication of an Integer by a Fraction and by a Mixed Number

We will solve the multiplication of an integer by a fraction and by a mixed number in the following way:

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First step

We will convert the whole numbers and mixed numbers to fractions and rewrite the exercise.


Second step

We will multiply the numerators and the denominators separately.
The product of the numerators will be written in the new numerator.
The product of the denominators will be written in the new denominator.


Do you know what the answer is?

Multiplication and Division of Mixed Numbers

In multiplications

First step

We will convert mixed numbers to fractions and rewrite the exercise.


Second step

We will multiply the numerators and the denominators separately.
The product of the numerators will be written in the new numerator.
The product of the denominators will be written in the new denominator.
• The commutative property works - We can change the order of the fractions within the exercise without altering the result.


In divisions

First step

We will convert mixed numbers to fractions and rewrite the exercise.


Second step

We will convert the division into multiplication and swap between the numerator and the denominator in the second fraction.


Third step

We will solve by multiplying numerator by numerator and denominator by denominator.


Check your understanding

Division of an Integer by a Fraction and by a Mixed Number

First step

  • In case there is any mixed number - we will convert it into a fraction
    •     In case there is any whole number - we will convert it into a fraction

Second step

We will convert the division into multiplication and swap between the numerator and the denominator in the second fraction.


Third step

We will solve by multiplying numerator by numerator and denominator by denominator.


Examples and exercises with solutions of mixed fractions

Exercise #1

1:34= 1:\frac{3}{4}=

Video Solution

Step-by-Step Solution

To solve this problem, let's divide 11 by 34\frac{3}{4}. The solution involves converting the division into a multiplication:

  • Step 1: Recognize  1:34 \,1:\frac{3}{4}\, as the division 134\frac{1}{\frac{3}{4}}.

  • Step 2: Convert division into multiplication: 134=1×43\frac{1}{\frac{3}{4}} = 1 \times \frac{4}{3}.

  • Step 3: Compute the multiplication: 1×43=431 \times \frac{4}{3} = \frac{4}{3}.

  • Step 4: Convert 43\frac{4}{3} into a mixed number: 1131\frac{1}{3}.

Therefore, the solution to the division 1:341 : \frac{3}{4} is 113 1\frac{1}{3}

The correct answer is (113)(1 \frac{1}{3}).

Answer

113 1\frac{1}{3}

Exercise #2

3×812= 3\times\frac{8}{12}=

Video Solution

Step-by-Step Solution

To solve this problem, we'll pursue a step-by-step method:

  • Step 1: Simplify the fraction 812\frac{8}{12}. The greatest common divisor of 8 and 12 is 4, so dividing both the numerator and denominator by 4 gives 23\frac{2}{3}.
  • Step 2: Multiply the integer 3 by the simplified fraction 23\frac{2}{3}.

Let's proceed with these steps:
Step 1: Simplify 812\frac{8}{12}:
812=8á412á4=23\frac{8}{12} = \frac{8 \div 4}{12 \div 4} = \frac{2}{3}.

Step 2: Multiply the integer by the fraction:
3×23=3×23=63=23 \times \frac{2}{3} = \frac{3 \times 2}{3} = \frac{6}{3} = 2.

Thus, the result of the multiplication is 2\boxed{2}.

Answer

2 2

Exercise #3

1:14= 1:\frac{1}{4}=

Video Solution

Step-by-Step Solution

To solve the division problem 1:14 1 : \frac{1}{4} , we will follow these steps:

  • Step 1: Express the division as a fraction operation: 1á14 1 \div \frac{1}{4} .
  • Step 2: Use the invert-and-multiply rule. Find the reciprocal of 14\frac{1}{4}, which is 44.
  • Step 3: Multiply the whole number by the reciprocal: 1×4=4 1 \times 4 = 4 .

Thus, after performing these operations, we find that the result of the division 1:14 1 : \frac{1}{4} is 4 4 .

Answer

4 4

Exercise #4

8×12= 8\times\frac{1}{2}=

Video Solution

Step-by-Step Solution

To solve this mathematical problem, we need to multiply a whole number, 8, with the fraction, 12\frac{1}{2}.

Here are the steps:

  • Step 1: Identify the given values. The integer is 8 and the fraction is 12\frac{1}{2}.
  • Step 2: Apply the multiplication formula for an integer and a fraction: a×bc=a×bc a \times \frac{b}{c} = \frac{a \times b}{c} .
  • Step 3: Multiply the integer by the numerator of the fraction: 8×1=8 8 \times 1 = 8 .
  • Step 4: Divide the result by the denominator of the fraction: 82=4\frac{8}{2} = 4.
  • Step 5: Simplify the fraction if necessary. In this case, 82\frac{8}{2} simplifies directly to 4.

Therefore, the multiplication of 8 by 12\frac{1}{2} is 4 4 .

In the context of the multiple-choice options provided, the correct answer is choice (4): 4 4 .

Answer

4 4

Exercise #5

3:12= 3:\frac{1}{2}=

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Identify the reciprocal of the divisor.
  • Step 2: Multiply the dividend by the reciprocal.

Now, let's work through each step:
Step 1: The divisor is 12 \frac{1}{2} . The reciprocal of 12 \frac{1}{2} is 2.

Step 2: Multiply the dividend, which is 3, by the reciprocal of the divisor:
3×2=6 3 \times 2 = 6

Therefore, the solution to the problem is 6 6 .

Answer

6 6

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