1. Word cloud
120 seconds
What is the result of adding a positive number to a negative number?
2. Slide
60 seconds
Integers are whole numbers (positive, negative, and zero) that can be added and subtracted. When two integers have the same sign, add their values and use the sign of the integers. When two integers have different signs, subtract the lesser value from the greater value and use the sign of the integer with the greater value.
Adding and Subtracting Integers
3. Slide
60 seconds
Addition: A mathematical process that combines two or more numbers to produce a sum. Subtraction: A mathematical process that compares two numbers to determine the difference between them. Integer: A number that can be written without a fractional portion, such as -4, 0, and 5.
Concepts:
4. Slide
60 seconds
Adding two negative integers results in a smaller negative number. For example, -3 + -2 = -5. When you subtract a negative number from a positive number, the result is the same as adding the two numbers together. Subtracting an even number from an odd number will always result in an odd number.
Did you know?
5. Open question
300 seconds
What is the difference between a positive and negative integer?
6. Open question
300 seconds
Can you think of a real-world scenario in which you would need to add and subtract integers?
7. Open question
300 seconds
Describe how adding and subtracting integers relates to temperature changes.
8. Open question
300 seconds
How is adding and subtracting integers similar to financial transactions?
9. Drawings
450 seconds
Brain break: Draw a dinosaur with a tutu dancing on stage while playing a violin!
10. Drawings
1260 seconds
Question: You and your partner are selling lemonade on opposite sides of the street. You both have different amounts of money. How can you use adding and subtracting integers to figure out how much money you have together? Clues: • A positive number means you have money. • A negative number means you owe money. • Adding two numbers together gives you the total. In pairs: Select and solve one of the tasks: A. Come up with a story of how much money each of you have and how much money you have together. B. Draw a picture to represent your story and the solution.
11. Poll
60 seconds
What is the result of adding -7 and 5?
- -2
- 2
- 12
- -12
12. Poll
60 seconds
What is the result of subtracting -3 from 8?
- -11
- 5
- 11
- -5
13. Poll
60 seconds
Which of the following expressions represents the sum of -9 and 4?
- -9 + (-4)
- -9 + 4
- -9 - 4
- -9 - (-4)
14. Poll
60 seconds
What is the result of adding -15, -8, and 6 together?
- 1
- 17
- -23
- -17
15. Poll
60 seconds
What is the result of subtracting 10 from -3?
- 13
- 7
- -7
- -13
16. Open question
180 seconds
Work together in pairs: What is the rule for adding and subtracting integers with the same sign?
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