Open Up - Grade 7 - Mathematics - Unit 4 - Lesson 15
By Formative Library
starstarstarstarstar
Last updated about 2 years ago
8 Questions
1
1.
Jada measured the height of a plant in a science experiment and finds that, to the nearest
of an inch, it is
inches.
What is the largest the actual height the plant could be?
7.RP.3
1
2.
Jada measured the height of a plant in a science experiment and finds that, to the nearest
of an inch, it is
inches.
What is the smallest the actual height the plant could be?
7.RP.3
1
3.
Jada measured the height of a plant in a science experiment and finds that, to the nearest
of an inch, it is
inches.
How large could the percent error in Jada’s measurement be?
7.RP.3
1
4.
Water is running into a bathtub at a constant rate. After 2 minutes, the tub is filled with 2.5 gallons of water. Write two equations for this proportional relationship. Use w for the amount of water (gallons) and t for time (minutes).
In each case, what does the constant of proportionality tell you about the situation?
7.RP.3
1
5.
Noah picked 3 kg of cherries. Jada picked half as many cherries as Noah. How many total kg of cherries did Jada and Noah pick?
7.RP.3
1
6.
The reading on a car’s speedometer has 1.6% maximum error. The speed limit on a road is 65 miles per hour.
The speedometer reads 64 miles per hour. Is it possible that the car is going over the speed limit?
7.RP.3
1
7.
The reading on a car’s speedometer has 1.6% maximum error. The speed limit on a road is 65 miles per hour.
The speedometer reads 66 miles per hour. Is the car definitely going over the speed limit?
7.RP.3
1
8.
Here is a shape with some measurements in cm.
Complete the table showing the area of different scaled copies of the triangle.
Is the relationship between the scale factor and the area of the scaled copy proportional?
7.RP.3
"Source: Open Up Resouces (Download for free at openupresources.org.)"