Write the subtraction sentence - up to three digits

Learning Objectives Identify the minuend, subtrahend, and difference in a subtraction sentence. Translate simple word problems into correct subtraction sentences involving up to three-digit numbers. Write a subtraction sentence given two numbers and the operation. Recognize common keywords that indicate subtraction in a problem. Explain the relationship between subtraction and addition as inverse operations. Construct subtraction sentences for scenarios involving quantities up to 999. Ever wonder how stores figure out how much change to give you? 💰 It's all about subtraction, and today we'll learn how to write those math stories! In this lesson, you'll learn how to write clear and correct subtraction sentences using numbers up to three digits. Understanding...

TermDefinitionExample SubtractionThe process of taking one number or quantity away from another to find the difference.If you have 8 cookies and eat 3, you perform subtraction to find out how many are left. Subtraction SentenceA mathematical statement that shows one number being subtracted from another, resulting in a difference. It uses numbers, the minus sign (-), and the equals sign (=).$15 - 7 = 8$ is a subtraction sentence. MinuendThe first number in a subtraction sentence, from which another number is subtracted. It is the larger quantity you start with.In $25 - 10 = 15$, the minuend is 25. SubtrahendThe second number in a subtraction sentence, which is being taken away from the minuend.In $25 - 10 = 15$, the subtrahend is 10. DifferenceThe result or answer obtained when one number...

Structure of a Subtraction Sentence $\text{Minuend} - \text{Subtrahend} = \text{Difference}$ This is the fundamental way to write any subtraction problem. The minuend is the starting quantity, the subtrahend is what is removed, and the difference is what remains. Identifying Subtraction from Keywords Look for keywords such as "take away," "left," "remaining," "difference," "how many more/less," "minus," or "decreased by" to determine if subtraction is required. When solving word problems, these keywords are clues that tell you to set up a subtraction sentence. Inverse Relationship with Addition If $\text{A} - \text{B} = \text{C}$, then $\text{C} + \text{B} = \text{A}$. Subtraction and addition are...