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Decimals

What is a decimal?

What is Decimal?

Decimal is a fraction whose denominator is a power of ten and whose numerator is expressed by figures placed to the right of a decimal point.

eg: 54.9

About..

Multiplication of Decimals

About..

Division of Decimals

Conversion of Units

Steps for multiplication of decimals

Multiplication

Multiplication

Multiplication of decimals

1. Line up the numbers on the right - do not align the decimal points.

2. Starting on the right, multiply each digit in the top number by each digit in the bottom number, just as with whole numbers.

3. Add the products.

Steps for division of decimals

Division

Division

Division of decimals

1. Move the decimal point in the divisor and dividend.

2. Place a decimal point in the quotient (the answer) directly above where the decimal point now appears in the dividend.

3. Divide as usual, being careful to line up the quotient properly so that the decimal point falls into place.

Conversion of Units

Conversion of units

Conversion of units is the conversion between different units of measurement for the same quantity, typically through multiplicative conversion factors.

Example

1. Convert 7.85 dal - dl

dl = X 100

= 7.85 X 100 = 785 dl

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