**Definition of Bar Notation**

- The process of writing repeating decimals or repeating pattern of digits by using a bar is called Bar Notation.

**More about Bar Notation**

- Bar notation can be put with single or multi-digit repeating numbers or repeating patterns of decimals.
- For a single-digit repeating decimal, the repeating number is written once and a bar is put over it.
- For a multi-digit repeating decimal, the repeating pattern is written once and a bar is put over the digits from the first to the last one.

**Examples of Bar Notation **

- = 0.666666 and can be written as 0.
- = 0.428571428571428571 and can be written as 0.

**Solved Example on Bar Notation**

Which of the following is the correct bar notation for the number 4.13333?

Choices:

A.

B.

C.

D. 4.13

Correct Answer:A

Solution:

Step 1:For a single-digit repeating decimal, the repeating number is written once and a bar or dot is put over it.

Step 2:In 4.13333, only 3 is repeating.

Step 3:So, a bar can be put on 3 and the correct bar notation would be .

**Related Terms for Bar Notation**

- Decimal
- Digit
- Pattern
- Repeating Decimal