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Multiplying Integers

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Lesson Details

Grade Level
6-8
Duration (minutes)
1
Summary
A quick lesson on the sign rule for multiplying integers — decide the sign first, then multiply — walked through with four worked examples.

Infographic showing four multiplication examples grouped by same signs versus different signs

Student Worksheet: Multiplying Integers

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:

• Decide the Sign First: Before multiplying the numbers, figure out whether the answer will be positive or negative.

• Same Signs: Two positive numbers or two negative numbers multiply to a positive answer.

• Different Signs: A positive and a negative number multiply to a negative answer.

Instructions: Read each question carefully and write your answer in the space provided.

  1. Question 1: What is 6 × 4?
  2. Question 2: What is -5 × -3?
  3. Question 3: What is 8 × -2?
  4. Question 4: What is -7 × 5?
  5. Question 5: Is the answer to -9 × -2 positive or negative? Why?
  6. Question 6: In your own words, explain the two-step process for multiplying integers.
Click to reveal Teacher Answer Key

1. 24 @ 0:24

2. 15 @ 0:30

3. -16 @ 0:42

4. -35 @ 0:59

5. Positive — both numbers have the same sign (negative).

6. First decide whether the answer will be positive or negative based on the signs, then multiply the numbers as usual.

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: Give students 6 multiplication problems mixing same-sign and different-sign pairs and have them label the sign of the answer FIRST (before multiplying), then solve to check their prediction.

📚 Part of a 5-Day Series: Integers Week

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