Operations With Decimals
Write seven and eighteen hundredths in standard form
7.18
6 2/8 + 5 1/4 = ?
11 1/2
(14 + 21 - 3) / 16 + 22
6
Rewrite the following ratio in two different forms
5 / 8
5:8 , 5 to 8
Define a proportion
a statement of equality of two ratios
1.86 / 0.6 = ?
3.1
It took Victor 8 4/5 hours to complete his science project and 5 3/10 hours to wrap up his art project. How many hours of work went into finishing the two projects?
14 1/10 hours
Translate the following phrase into an algebraic expression: "five times the difference of a number and one"
5 (x - 1)
A bag contains 4 green marbles, 3 red marbles, and 6 blue marbles. What is the ratio of blue marbles to green marbles in simplest form?
3:2
Does the following pair of ratios form a proportion?
10/ 24 and 25/ 60
Yes
...x2.5
4,446 / 0.19 = ?
23.4
For the winter clothing drive, Sam's class collected 5 pounds of clothing. Polly's class collected 3 1/3 times as much clothing as Sam's class. How many pounds of clothing did Polly's class collect?
16 2/3 pounds
Evaluate 3(6 - a) + 7 - 2a for a=4
5
Store A sells 6 songs for $8 and Store B sells 10 songs for $12. Which store has the better deal?
Store B
Solve the following proportion
4/u = 12/21
u = 7
Dolores bought 15 party hats priced at $0.75 each and 15 noisemakers priced at $1.25 each. How much did Dolores spend in all?
$30
How many pieces of rope measuring 5/8 of a foot can be cut from a rope of 4 3/8 feet?
7 pieces
Solve for b
3 1/3 = b - 2/3
b = 4
"11 inches of snow in 8 hours"
rate: 11 in / 8 hr
unit rate: 1.38 in per hour
Mary reduced the size of a painting to a width of 3.3 in. What is the new height if it was originally 32.5 in tall and 42.9 in wide?
2.5 inches
Brad studied a total of 24.4 hours over a period of four days. On average, how many hours did brad study each day?
6.1 hours
Evelyn is 3 2/5 feet tall. If her uncle is 6 4/5 feet tall, how many more times is Evelyn's uncle taller than Evelyn?
2 times taller
Are the following expressions equivalent?
4 + 5(6t+1)
9 + 30t
Yes
A fair owner made $18 when a group of 3 people entered, which is a rate of __ per person.
$6
A blueprint of a house is drawn using a scale of 5 meters to 2 centimeters. On the blueprint, a room is 6 centimeters long. How long will the actual room be?
15 meters