What is the result of adding a positive number to a negative number?
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
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.
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?
What is the difference between a positive and negative integer?
Can you think of a real-world scenario in which you would need to add and subtract integers?
Describe how adding and subtracting integers relates to temperature changes.
How is adding and subtracting integers similar to financial transactions?
Brain break: Draw a dinosaur with a tutu dancing on stage while playing a violin!
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.
What is the result of adding -7 and 5?
What is the result of subtracting -3 from 8?
Which of the following expressions represents the sum of -9 and 4?
- -9 + (-4)
- -9 + 4
- -9 - 4
- -9 - (-4)
What is the result of adding -15, -8, and 6 together?
What is the result of subtracting 10 from -3?
Work together in pairs: What is the rule for adding and subtracting integers with the same sign?