Unit 2 - Integer Operations
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Essential Questions
How can integers be used to represent changes?
• How do you add and subtract integers? • How do you use integers to solve real-world problems? • How can you interpret multiplication and division with integer factors? Unit 2 Vocabulary
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Expected Outcomes
At the end of this unit, students should be able to:
• Identify additive properties of integers on a number line, including inverses, identity, and absolute value. • Add and subtract integers using geometric and symbolic representations. • Solve real-world problems involving integers. • Understand the rules for multiplication and division of integers and apply them. • Solve real-world problems using the four basic arithmetic operations with integers. |
Real World Integers
Positive integer words: deposit, gain, grow, bonus, increase, profit, up
Negative integer words: below, under, down, south, left, debit, ago, buy,
Negative integer words: below, under, down, south, left, debit, ago, buy,
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Inverse |
Something that is the opposite or reverse of something else.
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Absolute Value |
The distance a number is away from zero. -4 is 4 spaces away from zero; 4 is also 4 away from zero. -4 and 4 have the same absolute value.
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Minus |
There are 3 meanings to minus:
*Subtract from a positive number
*Negative number to the left of zero
*The opposite of a positive number
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Multiplying integers |
positive x positive = positive
negative x positive = negative positive x negative = negative negative x negative = positive |
