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Understanding the subtraction sign

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1st Grade Math
4. 1.OA.B.4
4.3 Understanding the subtraction sign

Understanding the Subtraction Sign

Discover what the minus sign means, how to read a subtraction sentence, and how to picture "take away" on a number line.


What You'll Learn

Recognize the minus sign \( - \) as the symbol that means "take away" or "find the difference"
Identify the three parts of a subtraction sentence such as \( 7 - 3 = 4 \)
Read a subtraction sentence aloud in the correct order, starting with the larger group
Model the minus sign on a number line by moving backward the number of steps being subtracted
Compare the minus sign to the plus sign to see how the two operations move in opposite directions
Apply the meaning of the subtraction sign to solve simple take away problems up to 20

What You'll Practice

1

Selecting words that mean subtract from multiple choices

2

Determining if a story describes a subtraction situation

3

Identifying subtraction language in various contexts

Why This Matters

Understanding subtraction language is essential for solving word problems throughout math. Recognizing keywords like 'less than,' 'difference,' and 'take away' helps you translate real-world situations into math equations you can solve.

This Unit Includes

1 Video lesson
Practice exercises
Learning resources

Skills

Subtraction
Word Problems
Math Vocabulary
Operations
Problem Solving
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