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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\( 4:\frac{6}{8}= \)

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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.
โ€ข 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
    โ€ขย ย  ย  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

4:68= 4:\frac{6}{8}=

Video Solution

Step-by-Step Solution

To solve this problem, we'll proceed as follows:

  • Step 1: Simplify the fraction 68\frac{6}{8}.
  • Step 2: Use the formula for dividing by a fraction by multiplying by its reciprocal.
  • Step 3: Simplify the resulting fraction or convert it to a mixed number.

Let's work through these steps:

Step 1: Simplify 68\frac{6}{8}.
68\frac{6}{8} simplifies to 34\frac{3}{4} by dividing the numerator and the denominator by 2 (the greatest common divisor).

Step 2: Find the reciprocal of 34\frac{3}{4} and multiply it by 4.
The reciprocal of 34\frac{3}{4} is 43\frac{4}{3}.
So, 4รท34=4ร—43=1634 \div \frac{3}{4} = 4 \times \frac{4}{3} = \frac{16}{3}.

Step 3: Simplify 163\frac{16}{3} to a mixed number.
163\frac{16}{3} can be expressed as 5135\frac{1}{3} since 16 divided by 3 is 5 with a remainder of 1.

Therefore, the solution to the problem is 5135\frac{1}{3}.

Answer

513 5\frac{1}{3}

Exercise #2

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: 1รท14 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: 1ร—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 #3

7:78= 7:\frac{7}{8}=

Video Solution

Step-by-Step Solution

To solve this problem, we will follow these steps:

  • Step 1: Rewrite the division as multiplication by the reciprocal of the fraction.
  • Step 2: Perform the multiplication calculation.

Now, let's work through each step:
Step 1: The given problem is 7:78 7:\frac{7}{8} , which means 7รท78 7 \div \frac{7}{8} .
Instead of dividing, multiply by the reciprocal:
7รท78=7ร—87 7 \div \frac{7}{8} = 7 \times \frac{8}{7} .

Step 2: Perform the multiplication:
7ร—87=7ร—87 7 \times \frac{8}{7} = \frac{7 \times 8}{7} .
The 77 in the numerator and denominator cancel each other out, resulting in:
567=8 \frac{56}{7} = 8 .

Therefore, the solution to the problem is 8 8 .

Answer

8 8

Exercise #4

3:23= 3:\frac{2}{3}=

Video Solution

Step-by-Step Solution

We need to find the value of 3:23 3:\frac{2}{3} , which means dividing 3 by 23\frac{2}{3}.

To solve this, follow these steps:

  • Step 1: Find the reciprocal of 23\frac{2}{3}. The reciprocal is obtained by swapping the numerator and the denominator, thus the reciprocal of 23\frac{2}{3} is 32\frac{3}{2}.
  • Step 2: Multiply 3 by the reciprocal 32\frac{3}{2}.
  • Step 3: Perform the multiplication: 3ร—323 \times \frac{3}{2}.

Let's execute these steps:

Step 2: Since multiplying a whole number by a fraction gives:

3ร—32=3ร—32=92 3 \times \frac{3}{2} = \frac{3 \times 3}{2} = \frac{9}{2}

Step 3: Convert the improper fraction 92\frac{9}{2} to a mixed number:

Divide 9 by 2 which gives 4 as the quotient and 1 as the remainder. Thus, the mixed number is 4124\frac{1}{2}.

Therefore, the solution to the ratio 3:233:\frac{2}{3} is 412\mathbf{4\frac{1}{2}}.

Answer

412 4\frac{1}{2}

Exercise #5

3:57= 3:\frac{5}{7}=

Video Solution

Step-by-Step Solution

To divide the whole number 3 by the fraction 57\frac{5}{7}, we follow these steps:

  • Step 1: Identify the reciprocal of the fraction. The reciprocal of 57\frac{5}{7} is 75\frac{7}{5}.
  • Step 2: Multiply the whole number 3 by this reciprocal.
  • Step 3: Perform the multiplication to find the result.

Let's calculate this:
Step 1: The reciprocal of 57\frac{5}{7} is 75\frac{7}{5}.
Step 2: Multiply: 3ร—75=3ร—75=2153 \times \frac{7}{5} = \frac{3 \times 7}{5} = \frac{21}{5}.
Step 3: Convert the improper fraction 215\frac{21}{5} to a mixed number:

  • Divide 21 by 5. It goes 4 times with a remainder of 1.
  • The quotient is 4, and the remainder is 1. Therefore, 215=415\frac{21}{5} = 4\frac{1}{5}.

Thus, the solution to 3:573 : \frac{5}{7} is 4154\frac{1}{5}.

The correct choice among the given answers is: 4154\frac{1}{5}.

Answer

415 4\frac{1}{5}

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