bar notation


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