Easy Unit Rate
James bought 4 note books for $12, what is the cost per notebook.
$3
A school store sells a 3-pack of note books for $6, what is the unit rate per notebook
$2
Is the answer to the equation -4/5 divided by 1/6 negative or positive
Negative
Divisible
A number is divisible by another whole number if you can divide them evenly and get a whole number with no remainder
A robotic rover travels 3/4 of a mile in 9/10 and hour, what is the unit rate of the speed in miles per hour.
(Hint: 3/4 over 9/10 is equivalent to 3/4 times 9/10
5/6 miles
A train travels 150 miles in 3 hours, what is the train's speed, in miles per hour
50mph
I earn $20 for 2 hours of work, $40 for 4 hours, and $60 for 6 hours, what is the constant rate of pay per hour
$10
(-2.655) multiplied by (18.44)
-48.9582
Scientific Notation
A short way to write very large or very small numbers, using power of ten
A mountain's stream flows at a rate of 4.5 meters every 3 seconds, what is the flow rate in kilometer per hour
5.4km/h
A factory makes 80 dolls in 4 minutes, how many toys did they make per minute
20 dolls
If 2 bagel cost $6, how much will 5 bags cost at the same unit rate
$15
-5/2 multiplied by (-1 2/3)
25/6 or 4 1/6
Reduce
Reduce is to simplify by making a fraction a small as possible but keeping the same value
Three stores sell the same coffee beans.
Store A: 1.5 pounds for $18.75
Store B:2.25 pounds for $26.10
Store C:12 ounces for $9.60 (Hint, 16 ounces equals 1 pound)
Which store offers the cheapest price
Store B
I buy 5 pounds of apples for $10, how much did I pay per pound
$2
A bakery uses 8 cups of flour to make 3 batches of brownies, how many cups of flour is needed to make 15 brownies
40 cups of flour
-0.30 multiplied by (-11/30)
0.11 or 11/100
Terminating Decimal
A decimal that ends
A large intake pipe can fill an empty swimming pool in 3.5 hours, while a smaller drainpipe can empty a pool in 7 hours. If both pipes are opened simultaneously on an open pool, what fraction is the pool filled per hour
1/7 of the pool per hour
My Teacher types 120 words in 3 minutes, what is the amount of words he types per minute
40 words
A truck travels 130 miles in 2 hours At a speed, how far will the truck travel in 5 hours.
325 miles
Which ones are positive
A: -0.2 *(12.5)
B: -1/12 * (-6 1/2)
C: 3.2 *(-1/900)
D: -3 1/2 * 0
E: -4.7 * (-1)
B and E
Difference
Difference is the answer you get when you subtract one number from another
A cyclist travels the first half of a 30-mile route at an average speed of 12 miles per hour and the second half at an average speed of 20 miles per hour. What is the cyclist's overall average speed fir the entire 30-mile journey.
15mph