Ratios and Proportional Reasoning Mid Chapter Review 7th Grade
3/125
2 2/5 % Write this percent as a fraction
1,760
20 mi/h = ____________ ft./min Convert, use the steps in the example to help remind you of the process.
2
20mi/h =______________ ft./min. How many unit rate conversions are needed?
Rate
A ______________ is a ratio that compares two quantities with different units of measure.
23
A car can travel 585 miles on 15 gallons of gas. How many gallons of gas does this car need to travel 897 miles? You can use a ratio table to solve this.
Complex Fractions
A fraction that contains one or more fractions in its numerator or denominator.
ordered pair
A pair of numbers used to locate a point on the coordinate plane.
2.1
A train travels at 125 miles per hour. Convert the speed to miles per minute. Round to the nearest tenth. The train traveled ______ miles per minute.
1.5 ft./day
A vine grows 7.5 feet every 5 days. How many feet does it grow per day. Use table to solve. (Think of "feet per day" what does that tell you about how to solve the problem?)
Yes
A vine grows 7.5 feet every 5 days. Is the length of the vine on the last day recorded proportional to the number of days of growth? Use the chart and its data provided to determine.
248 miles
After 3.5 hours, Nick traveled 217 miles. If he travels at a constant speed, how far will he travel after 4 hours? You can solve this by setting up a ratio table and using the unit rate.
20
Compare the unit rate of the 3 bags of Dog Food. The ___________ pound bag has the lowest price. Ex: $/lb
Equivalent Ratio
Ex: 2/6 and 1/3;
Division Problem
Fraction bars represents what?
No
Is the graph shown Proportional?
5 1/3
Josiah can jog 1 1/3 miles in 1/4 hour. His average speed was _________ miles per hour.
5
Logan entered a canoe race. He rowed 2 1/2 miles in 1/2 hour. The average speed was ______________ miles per hour?
0.13
Mrs. Medina needed to buy pencils for her classroom. She could buy pencils from Walmart for $2.50 for 20 pencils. Or Target had pencils for $2.00 FOR 12. What was the cost per pencil of the lowest rate?
Walmart
Mrs. Medina needed to buy pencils for her classroom. She could buy pencils from Walmart for $2.50 for 20 pencils. Or Target had pencils for $2.00 FOR 12. Which store had the better unit rate?
Proportional
Quantities that have a constant unit rate or ratio are __________________.
30
The bag will last _________ days.
Unit Rate
The denominator is 1 unit.
Non-Proportional
The relationship between two ratios with a rate or ratio that is not constant
4.38
The restaurant paid $10.50 for 12 loaves of bread. Determine the cost of 5 loaves of bread. The 5 loaves cost $_________________. You can set up a ratio table to solve this.
100
To write 2 2/5 % as an equivalent fraction you put the percent over ______________.
100
What is every percent based out of?
Straight line and goes through the origin (0,0).
What two things tell you that a graph is proportional or not proportional?
Converting unit rates
converting minutes to seconds ___________________________________.