Key Calculations

A long-term care facility has 3 registered nurses and 12 nursing assistants. Which of the following is the correct way to express the ratio of registered nurses to nursing assistants?

• 1:3
• 1/4
• 0.4
• 20%

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

You want to quickly estimate the total cost of a couple of new office supplies you see in a catalog. Which of the following is the most time-efficient way to do so?

•  Find a calculator, add the exact cost of the items, and then add sales tax and shipping
• Send an itemized list of the items to the business manager and ask if the office can afford the items.
• Round the prices to the nearest dollar, add them without a calculator, and decide if the purchase seems reasonable enough to pursue
• Go online, add the items to a shopping cart, and see what the total is.

A speech therapist saw 8 patients on Monday, 14 on Tuesday, 12 on Wednesday, 7 on Thursday, and 4 on Friday. What is the average number of patients the therapist saw each day this week?

• eight
• nine
• 10
• 11

Tags

CCSS.7.EE.B.3

What shows a relationship between like values?

• Ratio 
• Percentage
• Proportion
• Decimal

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

In one day, a doctor saw 6 female patients and 8 male patients. What is the ratio of female to male when reduced to lowest terms?

• 1 : 2 
• 2:3
• 6:8
• 3:4

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

In a proportion, what are the two outer terms called?

• Extremes
• Means
• Components 
• Ratios

Tags

CCSS.7.RP.A.2A

A proportion is an equation that shows the equality between two ____.

• Numbers 
• Formulas
• Ratios
• Measurements

Tags

CCSS.7.RP.A.2A

Which of the following is NOT a reason to estimate?

•  Calculating an approximate answer
• Judging if a calculated result seems reasonable
• Determining when an answer looks out of place
• Deciding exactly how many of something you need

What is a mathematical average?

• A number that represents a set of numbers
• Rounding a number to the nearest whole number
• A comparison of like values
• An educated guess

Tags

CCSS.5.NBT.A.2

Which of the following ratios is reduced to lowest terms?

• 3 : 16
• 3 : 9
• 4 : 16
• 5 :10

Tags

CCSS.6.RP.A.3A