writing and solving 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.

Front

How do you evaluate a numerical expression?

Back

To evaluate a numerical expression, perform the operations in the correct order, following the order of operations (PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)).

Front

What does 'four less than' mean in a numerical expression?

Back

'Four less than' means to subtract 4 from a number. For example, 'four less than 10' is written as 10 - 4.

Front

What is the order of operations?

Back

The order of operations is a set of rules that determines the sequence in which calculations are performed in a mathematical expression. It is often remembered by the acronym PEMDAS.

Front

What is the result of 46 - 42 ÷ 7?

Back

The result is 40. First, divide 42 by 7 to get 6, then subtract that from 46.

Front

How can you represent Dr. Frog's jumps as a numerical expression?

Back

Dr. Frog's jumps can be represented as 4 + 10 + 10 - 2.

Front

What does the expression 24 × (20 + 5) represent?

Back

It represents 24 times the sum of 20 and 5.

Front

What is the sum of 7 and 3?

Back

The sum of 7 and 3 is 10.

Front

What does 'the product of' mean in mathematics?

Back

'The product of' refers to the result of multiplying two or more numbers together.

Front

How do you write 'two jumps of 10' in a numerical expression?

Back

You write it as 10 + 10 or 2 × 10.