Adding Integers Using a Number Line
6-8
1
Subtracting Integers on a Number Line
Lesson Details
Grade Level
6-8
Duration (minutes)
1
Summary
This lesson teaches how to subtract integers using a number line. Using the example 4 − 6, it shows starting at 4 and moving 6 spaces to the left (since subtracting a positive number means moving left), landing on −2. It closes with the key rule: subtracting a positive number moves you left, while subtracting a negative number moves you right — since subtracting a negative is the same as adding.
Student Worksheet: Subtracting Integers on a Number Line
Teacher Note: Students can watch the video lesson above and answer the questions. Click the “Teacher Answer Key” dropdown below when you are ready to review the solutions!
Key Concepts:
• Subtracting a Positive Number: Move to the left on the number line.
• Subtracting a Negative Number: Move to the right on the number line (since subtracting a negative is the same as adding).
Instructions: Read each question carefully and write your answer in the space provided.
- Question 1: In the example 4 − 6, where do you start on the number line?
- Question 2: Since we are subtracting a positive 6, which direction do you move?
- Question 3: Solve 4 − 6 using the number line method. What is the answer?
- Question 4: What is the rule for subtracting a positive number? What about subtracting a negative number?
- Question 5: Use a number line to solve: 2 − 5. Show your steps (starting point, direction, number of spaces moved).
Click to reveal Teacher Answer Key
1. You start at 4.
2. Move to the left.
3. Starting at 4 and moving 6 spaces left lands on −2, so 4 − 6 = −2.
4. Subtracting a positive number: move left. Subtracting a negative number: move right (since it’s the same as adding).
5. Start at 2, move 5 spaces left, landing on −3. So 2 − 5 = −3.
Disclaimer: This worksheet was generated with AI assistance based on original video content. It is intended for educational reference only. Teachers are encouraged to review and adjust questions to fit their curriculum standards before classroom use.
🎯 Extension Activity: Have students draw their own number line from -10 to 10. Give them three integer subtraction problems (mixing positive and negative numbers being subtracted) to solve by drawing the starting point and arrow showing the movement, just like the video demonstrated.