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Q: A: ### Quick Answer

**The mathematical sign for less than is <.** This sign is used in inequalities, which are statements indicating one number or expression is larger or smaller than another. The less than sign with a horizontal line drawn just below it means "less than or equal to."

An example using the less than sign is 5 < 10. Several signs show the relationship between expressions in a mathematical statement. The equal sign is =, and the "not equal sign" is the same as an equal sign with a left-slanting line through it. The greater than sign is >, and the greater than or equal to sign is > with a horizontal line beneath it.

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## What is the congruent sign?

A:The congruent sign is a symbol used in geometry to indicate that two figures have the same size and shape. The sign consists of two parallel, horizontal lines topped by a single slightly wavy line. This is a combination of the "equal" sign and the "similar" sign.

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## Why does the inequality sign change when both sides are multiplied or divided by a negative number?

A:Multiplying or dividing both sides of an equation by a negative number changes the inequality of the equation, because it changes the sign of each side of the equation. On both sides, what was positive becomes negative, and what was negative becomes positive.

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## What are mathematical phrases?

A:A mathematical phrase is a set of words or a combination of words and numbers that can be written as a mathematical expression. An expression is a mathematical phrase that combines numbers and/or variables using mathematical operations. Expressions represent a value. Examples include variables and/or numerals appearing alone or in combination with operators.

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## In mathematical terms, what does "factor" mean?

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Full Answer >**A factor is a number or expression that divides another number or expression evenly without a remainder.**For instance, two, four, five and 10 are factors of 20 because 20 can be divided by all those smaller numbers an exact number of times. Prime numbers are positive integers greater than one that have exactly two factors. A composite number has more than two factors.Filed Under: