Unit 3 Test Review 7.4d 7.4b 7.4e

If a fish makes 480 dives in 10 hours, how do you calculate the number of dives in a different time frame?

• Divide the total dives by the total time to find the rate and multiply by the new time frame.

• Multiply the total dives by the total time to find the rate.

• Add the total dives to the total time to find the rate.

• Subtract the total dives from the total time to find the rate.

How do you set up a proportion to solve for an unknown quantity?

• Set up a fraction that represents the known ratio and equate it to a fraction that represents the unknown ratio, then cross-multiply to solve.

• Add the known quantity to the unknown quantity and divide by two.

• Multiply the known quantity by the unknown quantity and set it equal to a constant.

• Subtract the known quantity from the unknown quantity and solve for the unknown.

How can you find the total number of dives a fish makes in a specific time period?

• Add the number of dives per hour to the number of hours.

• Multiply the rate of dives per hour by the number of hours.

• Divide the total time by the number of dives.

• Subtract the number of hours from the rate of dives per hour.

What is the formula to convert fluid ounces to milliliters?

• Multiply the number of fluid ounces by 30 to get the equivalent in milliliters.

• Divide the number of fluid ounces by 30 to get the equivalent in milliliters.

• Add 30 to the number of fluid ounces to get the equivalent in milliliters.

• Multiply the number of fluid ounces by 15 to get the equivalent in milliliters.

What is the significance of understanding ratios in real-life applications?

• It helps in making comparisons and solving problems related to proportions in various contexts, such as cooking, budgeting, and resource allocation.

• It is primarily used in mathematical theories and has no practical application.

• It simplifies complex equations without any real-world relevance.

• It is only useful in academic settings and not in everyday life.

How do you determine the number of counselors needed for a different number of girls at a summer camp?

• Use the ratio of counselors to girls and set up a proportion to solve for the number of counselors needed.

• Count the number of girls and assign one counselor for every 10 girls.

• Ask the current counselors how many more are needed based on their experience.

• Increase the number of counselors by 50% for any additional girls.

How do you calculate the expected number of girls in a class based on a given ratio?

• Use the ratio to find the fraction of the total that represents girls, then multiply that fraction by the total number of students.

• Add the number of boys to the number of girls to find the total, then divide by the number of girls.

• Multiply the total number of students by the ratio of boys to girls to find the number of girls.

• Subtract the number of boys from the total number of students to find the number of girls.

What is the conversion factor between fluid ounces and milliliters?

• 1 fluid ounce is approximately 15 milliliters.

• 1 fluid ounce is approximately 30 milliliters.

• 1 fluid ounce is approximately 50 milliliters.

• 1 fluid ounce is approximately 100 milliliters.

What are the units of measurement for speed when a car is going 50 miles per hour?

• Kilometers and minutes

• Miles and hours

• Meters and seconds

• Feet and hours

What steps should you take to solve a word problem involving rates?

• Identify the known quantities, determine the rate, set up an equation or proportion, and solve for the unknown.

• Only identify the known quantities and solve for the unknown.

• Determine the rate and ignore the known quantities.

• Set up an equation without identifying any quantities.