Rational Numbers
Add Rational Numbers
Subtract Rational Numbers
Multiply Rational Numbers
Divide Rational Numbers
Vocabulary
100
Which of the following numbers are repeating decimals?
1/2, 112.56, 3.bar451, 2/3
3.bar451, 2/3
100
Find -1/3+5 2/3
5 1/3
100
-4.13-(-10.1)
5.97
100
-4/5(-7/8)
7/10
100
-4/5div7/10
-1 1/7
100
Every decimal is a repeating decimal. A decimal with a repeating digit of zero is call a ___________.
Terminating Decimal
200
Which of the following best describes a fraction that can be written as a decimal using bar notation?
A) integer
B) decimal
C) repeating decimal
D) terminating decimal
C) repeating decimal
200
What is the distance between Scott and Nairobi?
19.55
200
-4 3/5-1.2
Express your answer as a decimal.
-5.8
200
If there are 40 quarters in a roll and one quarter is 1.75mm thick, what is the total combined length of 5.5 rolls of quarters.
40*1.75*5.5=385
200
a/k if a=0.45 and k=-3/4
-0.6
or
-3/5
200
Two rational numbers are ________ if they are represented on a number line by points that are the same distance from zero.
Choices:
opposites
integers
repeating decimals
terminating decimals
opposites
300
What is the decimal representation of 5/6
0.8bar3
300
-0.5+2 1/4+1 5/8
3 3/8
300
-3 1/8-4 1/2
-7 5/8
300
Two numbers that have a product of 1 are called __________.
Choices:
integers
additive inverses
multiplicative inverses
irrational
multiplicative inverses
300
Nick has a total of 78 books in his collection. The average size of each book is shown below. He wants to buy shelves for his book collection. If each shelf is 20 inches wide, how many shelves will he need for the entire collection?
Each shelf can hold 16 books
20div1.25=16
so you would need 5 shelves for his entire collection because 4 wouldn't be enough.
78div16=4 7/8
300
The sum of a number and its _________ is zero.
Choices:
multiplicative inverse
additive inverse
reciprocal
additive inverse
400
Write the fraction 11/20 as a decimal.
0.55
400
Which of the following are a set of additive inverses? Select all that apply.
A) 1/2,-0.5
B) -5 1/8, 5.125
C) -0.7bar8, -7/9
D) 2/3, 0.bar6
A and B
400
Maria brought $42.45 with her to the mall. After buying the following items, how much does she have left?
$21.01
400
The area of a rectangle is found by multiplying the base and height. Find the area of the rectangle below.
21.45
400
What is the average amount of change per week during this time?
-2.95
400
When writing a fraction as a repeating decimal, use _______ to indicate the repeating digits.
a bar