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Topic 4

Integer Operations

additive inverse when two numbers have a sum of 0
integers the set of positive whole number, their opposites and 0
inverse Property of Addition Property that states the sum of a number and its additive inverse is 0
expression a mathematical phrase that can involve variables, numbers, and operations
sum the answer to an addition problem
difference the answer you get when subtracting two numbers
model to represent a situation using pictures, diagrams, or number sentences
conjecture s statement that you believe to be true but have not yet proved to be true
counterexample a specific example that shows that a conjecture is false
dividend the number to be divided
expense money that a business or a person needs to spend to pay for or buy something
income money that business received or that a person earns from working
loss when expenses are greater than income
profit when expenses are less than income