Writing Expressions from Word Problems

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (such as +, -, *, /) that represents a value.

Front

How do you translate a word problem into a mathematical expression?

Back

Identify the quantities involved, determine the operations needed, and use variables to represent unknowns.

Front

What does 'the sum of a number and 5' translate to in an expression?

Back

x + 5, where x is the number.

Front

What does 'the difference between a number and 3' translate to in an expression?

Back

x - 3, where x is the number.

Front

What does 'twice a number' mean in mathematical terms?

Back

2x, where x is the number.

Front

What does 'the product of 4 and a number' translate to in an expression?

Back

4x, where x is the number.

Front

How do you represent 'a number decreased by 7' in an expression?

Back

x - 7, where x is the number.

Front

What does 'the total cost of p tickets at $10 each plus a $12 parking fee' look like as an expression?

Back

10p + 12.

Front

If a driver earns $10 per hour and works h hours, how do you express their earnings?

Back

10h.

Front

What is the expression for 'the number of frogs left after f frogs hop away from 47'?

Back

47 - f.