Numerical Expressions

Front

What is a numerical expression?

Back

A numerical expression is a mathematical phrase that includes numbers and operations (like addition, subtraction, multiplication, and division) but does not have an equal sign.

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What does the word 'sum' mean in mathematics?

Back

The word 'sum' refers to the result of adding two or more numbers together.

Front

What is the order of operations in mathematics?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed. The order is: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). This is often remembered by the acronym PEMDAS.

Front

How do you write the expression 'the sum of 7 and 8 times 98' mathematically?

Back

Front

Does an expression have an answer?

Back

No, an expression does not have an answer; it represents a value that can be calculated when evaluated.

Front

What is the result of the expression '5 + 3 x 8'?

Back

The result is 29, calculated by following the order of operations: first multiply 3 by 8, then add 5.

Front

What does the multiplication symbol 'x' represent?

Back

The multiplication symbol 'x' represents the operation of multiplying two numbers together.

Front

How do you express '2 times the sum of 14 and 12' mathematically?

Back

Front

What is the difference between an expression and an equation?

Back

An expression is a combination of numbers and operations without an equal sign, while an equation is a statement that two expressions are equal, containing an equal sign.

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Back

The result is 23, calculated by first multiplying 4 by 5, then adding 3.