Vocabulary
What is a rational number?
A number that can be written in the form a/b [as a fraction]. Can also be a terminating or repeating decimal.
7/10
0.7
You are 5 dollars in debt. You borrow 12 dollars more. What is the total amount of your debt?
-17
-23+(-83)=
-106
37+(-23)=
14
What is a terminating decimal?
Numbers with decimals that end, or end in repeated 0s
11/20
0.55
Adding Integers: You park in a garage 3 floors below ground level. Then you get in the elevator and go up 12 floors. What floor do you get off the elevator?
9th floor
33-72=
-39
-99+71=?
-28
What is an additive inverse?
2/9
0.22222222...
Stephanie has $15 in the bank. She deposits 4 dollars into her account. Use an equation to represent this situation and find the sum.
15 + 4 =19
-92+ (-81)=?
-173
197-(-98)
295
What are the ways to show a decimal is repeating?
An ellipsis (...) at the end or a bar over the repeating digits.
2 and 3/8
2.375
The record high temperature for Massachusetts is 104 degrees Fahrenheit. The record low is -18 degrees Fahrenheit. What is the difference between high and low?
122 degrees Fahrenheit
79+ 90=?
169
98-(-98)=
196
Give an example of a nonterminating, nonrepeating decimal
Answers will vary.
6 and 8/15
6.5333333333...
Sylvia checked the balance in her bank account early in the morning and saw that she had 98 dollars. In the afternoon, she noticed that there was an overdraft of 6 dollars in the account for unpaid bills. How much were the unpaid bills
104
-27+(-33)=?
-60
12345-(-12345)=
24,690