Vocabulary
Define Integers
Any positive or negative whole number found on the number line
True or False? Zero is an integer
True
What's the opposite integer of -5?
5
Negative; because 100 is larger than 99
What is the rule for subtracting negative integers?
Keep, Change, Change
Absolute value is a number's...
True or False. All integers, except 0, are rational numbers
What's the absolute value of 1,999?
What is the sign of the sum: (-45) + (-45) AND WHY?
Negative; because they're both negative so you keep the sign
(-84) + (-34)
A Rational Number is any real number that can be written as a _ _ _ _ _ _ _ _. (a/b)
Fraction
What are the two synonyms for additive inverse?
- zero pair
- opposite integers
What are the two synonyms for additive inverse?
Zero Pair + Opposite Integers
Find the sum: (-22) + 49 =
27
99 - (-15)
114
A repeating decimal is a rational number...
- that repeats the same decimal expansion, (digits/ pattern of digits) without end
OR
- where the remainder will never reach zero
Why is 3.14 (or Pi) not an integer?
Because it's not a whole number
True or False. Absolute Values are always positive because it represents the distance not direction
True !
How do you solve addition problems, where the numbers have different signs?
Subtract the smaller number from the larger number ; keep the sign of the larger number
Which addition rule eventually leads to subtraction ?
Rule 2 - adding numbers with different signs