We will discuss here about division of a whole number by a fraction.

Look at the collection of circles. It has 8 circles.

How many two’s are there in 8?

How many two’s are there in 8? So we find there are 4 two in 8.

Now what does the following statement mean?

How many halves are there in 8? To find this, let us divide each of the 8 circles into halves.

We find there are 16 halves in 8

So, the answer is 8 ÷ ½ = 16

i.e. = 8 ÷ ½ = 8 × 2/1 = 8 × 2/1 = 16

Therefore, the rules for the division of a whole number by a fractional number is

**Whole Number ÷ Fraction = Whole Number × Reciprocal of Fraction.**

Hence, we conclude that to divide whole number by a fractional number, we multiply the whole number by multiplicative inverse of the fractional number.

**Note:** Wherever mixed numbers are used first change them into improper fractions.

**For Example:**

**1.** 4 ÷ 1/3

[We know, Whole Number × Reciprocal of Fraction]

Reciprocal of Fraction of ‘1/3’ is ‘3’

= 4 × 3

= 12

**2.** 16 ÷ 2/5

Reciprocal of Fraction of ‘2/5’ is ‘5/2’

= 16 × 5/2

= (16 × 5)/2

= 8 × 5

= 40**3.** 24 ÷ 1 3/5

= 24 ÷ (1 × 5 + 3)/5

= 24 ÷ 8/5

Reciprocal of Fraction of ‘8/5’ is ‘5/8’

= 24 × 5/8

= 3 × 5

= 15

**4.** 49 ÷ 7/3

Reciprocal of Fraction of ‘7/3’ is ‘3/7’

= 49 × 3/7

= 7 × 3

= 21

**5.** 11 9/9 ÷ 12/7

= (11 × 9 + 9)/9 ÷ 12/7

= 108/9 ÷ 12/7

Reciprocal of Fraction of ‘12/7’ is ‘7/12’

= 108/9 × 7/12

= 7

**6.** 91 ÷ 91/34

Reciprocal of Fraction of ‘91/34’ is ‘34/91’

= 91 × 34/91

= 34

**●
****Multiplication
is Repeated Addition.**

● Multiplication of Fractional Number by a Whole Number.

● Multiplication of a Fraction by Fraction.

● Properties of Multiplication of Fractional Numbers.

● Worksheet on Multiplication on Fraction.

● Division of a Fraction by a Whole Number.

● Division of a Fractional Number.

● Division of a Whole Number by a Fraction.

● Properties of Fractional Division.

● Worksheet on Division of Fractions.

● Simplification of Fractions.

● Worksheet on Simplification of Fractions.

● Worksheet on Word Problems on Fractions.

**5th Grade Numbers Page **

**5th Grade Math Problems **

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