Subtraction word problems - up to 18

Learning Objectives Identify key information and numbers in subtraction word problems. Translate verbal phrases into mathematical subtraction expressions. Accurately solve subtraction word problems with totals up to 18. Verify the reasonableness of solutions to subtraction problems. Explain the steps taken to solve a subtraction word problem. Distinguish between situations requiring subtraction and other operations. Ever wonder how many cookies are left after your friends eat some? 🍪 Or how much change you'll get back? 🤔 Subtraction helps us figure out 'how many are left'! In this lesson, we'll sharpen our skills in solving word problems that involve subtraction, specifically with numbers up to 18. Even though the numbers are small, the challenge is in...

TermDefinitionExample Word ProblemA mathematical problem presented in a narrative or story format, requiring interpretation to identify the operation needed.Sarah had 15 apples and gave 3 away. How many does she have left? SubtractionAn arithmetic operation that represents the removal of objects from a collection, or finding the difference between two numbers.15 - 3 = 12 MinuendThe number from which another number is subtracted. It is the starting or larger quantity in a standard subtraction problem.In 15 - 3 = 12, 15 is the minuend. SubtrahendThe number that is subtracted from the minuend. It is the quantity being removed or compared.In 15 - 3 = 12, 3 is the subtrahend. DifferenceThe result obtained when one number is subtracted from another.In 15 - 3 = 12, 12 is the difference. Keywords...

The Subtraction Formula \text{Minuend} - \text{Subtrahend} = \text{Difference} This is the basic structure for any subtraction problem. The minuend is the starting quantity, the subtrahend is the quantity being removed or compared, and the difference is the result. Identifying Key Information Read the problem carefully to identify the starting amount (minuend), the amount being removed or compared (subtrahend), and what the question is asking you to find. Underline or highlight the numbers and keywords to help translate the word problem into a mathematical expression. Checking Your Answer \text{Difference} + \text{Subtrahend} = \text{Minuend} After finding the difference, add it to the subtrahend. If the sum equals the original minuend, your subtraction is likely cor...