Division of a decimal by a decimal are discussed here.

**1.** 14.7 ÷ 2.1*Solution:*

14.7 ÷ 2.1

[Count the number of decimal digits in the divisor and we observe that after decimal there is 1 number so we divide the number by 10.]

= 147/10 ÷ 21/10

= 147/10 × 10/21 [reverse it to multiplication]

= (147 × 10)/(10 × 21)

= 1470/210

Now divide the numbers as usual.

Therefore, 14.7 ÷ 2.1 = 7

**2.** 1.296 ÷ 0.108

*Solution:*

1.296 ÷ 0.108

[Count the number of decimal digits in the divisor and we observe that after decimal there are 3 numbers so we divide the number by 1000]

= (1296/1000) ÷ (108/1000)

= (1296/1000) × (1000/108)[reverse it to multiplication]

= (1296 × 1000)/1000 × 108)

= 1296000/108000

Now divide the numbers as usual.

Therefore, 1.296 ÷ 0.108 = 12

Alternative method of solving division of a decimal by a decimal**RULES***(i) Count the number of decimal digits in the divisor.(ii) Move the decimal in dividend that many places to the right.(iii) Write the divisor without the decimal.(iv) Now divide the numbers as usual.*

3. 8.005 ÷ 0.05

8.005 ÷ 0.05

[Count the number of decimal digits in the divisor.]

[Move the decimal in dividend that many places to the right.]

800.5 ÷ 5

[Write the divisor without the decimal.]

[Now divide the numbers as usual.]

Therefore, 8.005 ÷ 0.05 = 160.1

**4.** 76.363 ÷ 0.7

*Solution:*

76.363 ÷ 0.7

[Count the number of decimal digits in the divisor.]

[Move the decimal in dividend that many places to the right.]

763.63 ÷ 7

[Write the divisor without the decimal.]

[Now divide the numbers as usual.]

Therefore, 76.363 ÷ 0.7 = 109.09

**● Decimal.**

**Expanded form of Decimal Fractions.**

**Changing Unlike to Like Decimal Fractions.**

**Comparison of Decimal Fractions.**

**Conversion of a Decimal Fraction into a Fractional Number.**

**Conversion of Fractions to Decimals Numbers.**

**Addition of Decimal Fractions.**

**Subtraction of Decimal Fractions.**

**Multiplication of a Decimal Numbers.**

**Multiplication of a Decimal by a Decimal.**

**Properties of Multiplication of Decimal Numbers.**

**Division of a Decimal by a Whole Number.**

**Division of Decimal Fractions by Multiples.**

**Division of a Decimal by a Decimal.**

**Division of a whole number by a Decimal.**

**Conversion of fraction to Decimal Fraction.**

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