Table of Contents

## What does it mean in math when there is a line over a number?

This is called bar notation. But using bar notation, you would say 1 / 7 = 0.142857 with a line over those numbers to show that they repeat over and over. You can use the bar notation over any number that repeats the same number or numbers again after the decimal point.

**What is the little number on top of a number called?**

The power (or exponent) of a number says how many times to use the number in a multiplication. It is written as a small number to the right and above the base number.

**What does a line over a set mean?**

Complement: When the line above the letter represents the complement. If x is a set, then the complement of x (denoted by x with a line above it) is the set of all things not in x. It is represented as x̅

### How do you write a number that goes on forever?

A decimal number with a digit (or group of digits) that repeats forever. The part that repeats can also be shown by placing dots over the first and last digits of the repeating pattern, or by a line over the pattern. Also called a “Repeating Decimal”.

**What is the little 3 above a number called?**

Cube numbers

A cube number is a number multiplied by itself 3 times. This can also be called ‘a number cubed’. The symbol for cubed is ³.

**What does the little number below a number mean?**

A subscript is a character or string that is smaller than the preceding text and sits at or below the baseline. The small “n” is a subscript. When used in the context “Fn,” it refers to a function evaluated for the value “n.” The text n-1 and n-2 are also subscripts that define previous values of “n” in the sequence.

#### What does C with a line through it mean?

In music, a C with a line through it is most often called “cut time” or “split time”, or alla breve. It is a 2/2 time signature. A “C” without a line through it is a 4/4 time signature and is most often called “common time”.

**What does an A with a line over it mean?**

A line over a letter in the dictionary is a “macron.” When you see this over a letter ( ¯ ) it means that the vowel says its name. Unlike the other vowels, when you see the pronunciation of the word written out, you won’t see a “u” with a line over it where you think it should be.

**What does a set with a line on top mean?**

If x is a set, then the complement of x (denoted by x with a line above it) is the set of all things not in x. It is represented as x̅

## Why is 0.5 referred to as a fraction?

What is 0.5 as a fraction? 0.5 is said as “five-tenths”. This is because it is one place after the decimal (which is the tenths place). This is because five can go into itself once and goes into ten twice. Another way of thinking about it is that five is exactly half of ten.

**Why is 0.5 written as 5 tenths?**

0.5 is said as “five-tenths”. This is because it is one place after the decimal (which is the tenths place). It would then become five-tenths, written as: 5 10 You would then simplify the faction: 5 10 = 1 2

**What is the numerator and denominator for 0.5?**

Numerator & Denominator for 0.5 as a Fraction. 0.5 = 0 5 / 10. numerator/denominator = 5 / 10

### Which is the smallest line on a ruler?

You find that your ruler comes to the second line after the 6-inch mark. This would mean that the corn is 6 1/8 inches long. Finally, the smallest unit on a ruler is 1/16 inch. These tiny lines that represent 1/16 inch come between all 1/8-inch lines: Example: You’re trying to measure the length of your pointer finger.