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If there is an equal sign, it is called an equation; if there is a less-than, a less-than-or-equal, a greater-than, or a greater-than-or-equal sign, an inequality; if there is none of these, an expression.

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Q: What is a mathematical phrase that uses only number and operation signs?

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There are a few numbers that do not need signs. You do not have to sign when timing something.

A mathematical expression has numbers and operation signs with no equal sign. Equations, on the other hand, do contain equal signs.

four

It's an equation.

An "expression", is part of a number sentence that combines numbers and operation signs but does not have an equal sign" Example: x/y , when x=10 and y=5 , the assumption of this expresssion is 10/5 or 2. Or: 2+3 , the assumption of this expression is 5 even though no equal sign is present. Lyle Larson 4th grade Southern California

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This is a mathematical "expression".

There are a few numbers that do not need signs. You do not have to sign when timing something.

A mathematical expression has numbers and operation signs with no equal sign. Equations, on the other hand, do contain equal signs.

four

Algebraic expression

if there are no comparison signs (equals or inequalities, ie =, >, < etc) then it is an expression, eg "x + 5" If there is a comparison sign which is not equals, then it is an inequality, eg "x > 5"

A mathematical expression is a mathematical phrase that consist numbers variables and signs of operation example: x(variable) + 5(number)=7 so the value of x is 2 -Kennethn 10 yrs. old :]

An expression does not contain an equality sign.

It's an equation.

An expression

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