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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

OH Curriculum Aligned