Ratio
In a classroom, there are 18 pencils, 12 erasers, and 6 rulers. What is the ratio of pencils to erasers to rulers?
18 to 6
or
3 to 1
What is 15 + (-33)?
-18
1/2 + 1/4
3/4
What is 0.5 + 0.25?
0.75
What is the unit rate of 50 miles in 2 hours?
25 miles / hour
A recipe calls for 4 cups of flour, 2 cups of sugar, and 1 cup of butter. What is the ratio of flour to sugar to butter?
4:2:1
What is -14 × 3?
-42
3/4 - 1/2
1/4
What is 1.2 - 0.8?
0.40
What is the unit rate of 120 words in 3 minutes?
40 words per minute
On a school trip, there are 30 students and 5 teachers. What is the ratio of students to whole?
30 to 35 or 6 to 7
What is -12 ÷ 4?
-3
2/3 x 3/4
6/12 or 1/2
What is 0.6 × 0.4?
0.24
If 5 apples cost $2.50, what is the cost per apple?
$0.50 or 50 cents
In a library, there are 120 fiction books and 80 non-fiction books. What is the ratio of fiction books to all books?
120 to 200 or 3:5
What is -7 - (-2)?
-5
5/6 ÷ 1/2
10/6 or 1 4/6
What is 2.5 ÷ 0.5?
5
What is the unit rate of 180 miles in 3 hours?
60 miles per hour
A rate for which one of the quantities being compared is one unit.
Unit rate
Simplify -15 + 23 - 12.
-4
4/8 + 2/3
28/24
or
1 4/24
or
1 1/6
Simplify 1.25 + 0.75.
2
If 8 pencils cost $4.00, what is the cost per pencil?
$0.50 or 50 cents