The number of digits contained in the decimal part of a given decimal number gives the number of decimal places.

**Examples:**

1. The number 5.** 76** has 2 decimal places.

2. The number 0.** 315** has 3 decimal places.

3. The number 86.** 261** has 3 decimal places.

4. The number 912.** 67 **has 2 decimal places.

To understand about the explanation of a decimal numbers we must first know about the **Place Value**.

**For example;** let us take a decimal number 42.37

• The number is read as ** forty two and thirty seven hundredths** or

• In the decimal
number the **whole number part** is 42
and the **decimal part** is 0.37.

• In the whole
number part **42**

The place of 2 is ones or unit and its place value is 2 × 1 = 2.

The place of 4 is tens and its place value is 4 × 10 = 40.

• In the
decimal part **0.37**

The place of 3 is tenths and its place value is 3 × 1/10 = 3/10 = 0.3.

The place of 7 is hundredths and its place value is 7 × 1/100 = 7/100 = 0.07.

We can also
write the number in the **expanded form** as 42.37 = 40 + 2 + 0.3 + 0.07

= 4 10 + 2 1 + 3/10 + 7/100

** **

**Note:**

The expansion form of a decimal number is shown in three ways; we can do it in either of the ways.

● **Related Concept **

● Decimals

● Conversion of Unlike Decimals to Like Decimals

● Decimal and Fractional Expansion

● Converting Decimals to Fractions

● Converting Fractions to Decimals

● H.C.F. and L.C.M. of Decimals

● Repeating or Recurring Decimal

● BODMAS/PEMDAS Rules - Involving Decimals

● PEMDAS Rules - Involving Integers

● PEMDAS Rules - Involving Decimals

● BODMAS Rules - Involving Integers

● Conversion of Pure Recurring Decimal into Vulgar Fraction

● Conversion of Mixed Recurring Decimals into Vulgar Fractions

● Rounding Decimals to the Nearest Whole Number

● Rounding Decimals to the Nearest Tenths

● Rounding Decimals to the Nearest Hundredths

● Simplify Decimals Involving Addition and Subtraction Decimals

● Multiplying Decimal by a Decimal Number

● Multiplying Decimal by a Whole Number

● Dividing Decimal by a Whole Number

● Dividing Decimal by a Decimal Number

**7th Grade Math Problems**

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