Ratios Flashcards
(25 cards)
What is a ratio?
A ratio is a relationship between two numbers that shows how many times the first number contains the second.
True or False: A ratio can be expressed in three different forms.
True
Fill in the blank: The ratio of 4 to 2 can be simplified to ___.
2 to 1
What does the term โproportionโ mean in relation to ratios?
A proportion states that two ratios are equal.
If the ratio of boys to girls in a class is 3:2, how many boys are there if there are 10 girls?
15 boys
Express the ratio 8:12 in its simplest form.
2:3
Multiple Choice: Which of the following ratios is equivalent to 5:10? A) 1:2 B) 2:5 C) 3:5
A) 1:2
What is the cross-multiplication method used for in ratios?
It is used to determine if two ratios are equivalent.
True or False: Ratios can only compare two quantities.
False
In a recipe, the ratio of sugar to flour is 1:4. How much sugar is needed for 2 cups of flour?
0.5 cups of sugar
Fill in the blank: A ratio of 1:3 means for every ___ part of one quantity, there are ___ parts of another.
1, 3
What is a common application of ratios in real life?
Ratios are commonly used in cooking, finance, and comparing quantities.
If a map has a scale ratio of 1:50,000, what does this mean?
1 unit on the map represents 50,000 units in reality.
Multiple Choice: What is the ratio of 20 to 5? A) 4 B) 5 C) 1:4
A) 4
What is the ratio of 15 apples to 10 oranges expressed in simplest form?
3:2
True or False: The order of numbers in a ratio matters.
True
If the ratio of cats to dogs is 4:3, what part of the total represents the dogs?
3 parts out of 7 total parts
Fill in the blank: To combine ratios, you must ensure they have the same ___ first.
units
What is the ratio of 50 to 25 expressed as a fraction?
2:1
Multiple Choice: Which ratio represents the same relationship as 6:9? A) 2:3 B) 3:4 C) 1:1
A) 2:3
In a scale drawing, a ratio of 1:100 means what?
Every 1 unit in the drawing equals 100 units in real life.
What is the ratio of 10 red marbles to 30 blue marbles?
1:3
True or False: Ratios can be expressed as percentages.
True
If a car travels 60 miles in 1 hour, what is the ratio of distance to time?
60 miles per hour