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Unit 1: Rates, Ratios, Unit Rates & Proportions Flashcards | StudBud
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Unit 1: Rates, Ratios, Unit Rates & Proportions
Unit 1: Rates, Ratios, Unit Rates & Proportions
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A review of concepts students are learning in Math: 7th grade, unit 1
Flashcards
20 cards
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Practice quiz
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Questions
20
Answers
1
What is the correct math process for solving complex fractions?
Multiply by the reciprocal.
Add the fractions.
Divide the fractions
Divide by the reciprocal.
2
What is the constant of proportionality in the following: 1:8 2:16 3:24 4:32
8
1
16
4
3
How do you convert a mixed number to an improper fraction?
Numerator + Denominator + Whole Number
Denominator x Numerator + Whole Number
None of the above
Whole Number x Numerator + Denominator
4
What is the equation: I put $100 in the bank every month.
y=100x
y=x-100
x=100y
y=100+x
5
When will you use unit rates, rates and proportions?
when you are traveling
at the grocery store
when you are cooking
All of the above and more
6
Is this proportional? I put $100 in the bank, then I put $20 every month.
Yes, the constant of proportionality is 5.
No, the graph wouldn't be a line.
No, you don't put the same amount EVERY time.
Yes, you put the same amount EVERY month
7
What do rates compare?
2 different units
2 quantities in different units
2 different quantities
None of the above
8
Which equation can you use for a proportional relationship?
None of the above
y=kx
x=ky
k=xy
9
Which of the following is a proportional relationship?
3/5 and 9/10
1/2 and 2/6
2/ 3 and 4/ 8
2/5 and 4/10
10
What is a unit rate?
A rate in which the second quantity is 1.
All of the above.
A rate where there is only 1 unit being compared.
A rate in which both quantities are 1.
11
What does a constant of proportionality of 4/3 mean?
Nothing.
X and Y are never the same.
When x changes by 3, y changes by 4.
When x changes by 4, y changes by 3.
12
Find the constant of proportionality, k.
10
1.5
2.5
25
13
Which math sentence expresses a unit rate?
30 kids to 2 teachers
5 miles per 45 minutes
3 cups of flour/cake
$45 in 3 days
14
In the equation y=kx, k is the.....
constant rate of change
constant of proportionality
unit rate
All of the above
15
If there are 24 students to 2 teachers, how many students are there to 1 teacher?
12 students/1 teacher
48 students/1 teacher
26 students/1 teacher
24 students/1 teacher
16
Find the constant of proportionality, k.
0.2
1.5
5
3
17
How can you determine proportional relationships from a graph?
The line goes through the origin
Coordinates make a straight line & goes through the origin
None of the above
The coordinates make a straight line.
18
Which of the following are rates?
All of the above
x to y
x/y
x:y
19
When computing unit rate word problems, what should you find first?
The units in the problem.
None of the above.
The quantities in the problem.
The unit rate the problem is asking you to find.
20
In the equation y=15x, what is the 15?
All of the above
constant rate of change
unit rate
constant of proportionality
