Multiplying Decimals Answers

Question text not available

Which two factors should Ericka multiply to find the total variation in water level?2.2 mm and 6.2 years1.8 mm/year and 2.2 mm/yearX 1.8 years and –2.2 mm/year✔ 6.2 years and –2.2 mm/year

Matea recorded that water levels in one part of the river fell 1.05 millimeters per year for 2.48 years. Describe how you could estimate the total variation in water level.

Karin is also in Mr. Whittaker’s science class, and she recorded the variation in water level at a different part of the river. Karin observed that the water level there fell 1.68 millimeters per year for 1.5 years. Which expression shows a way to use the distributive property to solve for the total variation in water level at this part of the river?

Karin observed that the water level in the part of the river she observed fell 1.68 millimeters per year for 1.5 years. Use the distributive property to calculate the exact variation in water level for the time period. millimeters

Question text not available

Which of the decimals in the problem should be represented as a negative rate? 1.88 mm/yearX 2.2 mm✔ 2.2 mm/year 6.2 mm/year

You can multiply -2.2 by 6.2 to find the total variation in water level. What decimal represents the total variation in water level that Ericka observed? ⇒ -13.64 millimeters

Ericka decided to compare her observation to the average annual trend, which shows the water rising 1.8 mm/year. Remember, she used 6.2 years as her time period. Explain how she would calculate the difference between how much water levels rose on average and how much the water level fell in the part of the river she observed.

⇒ 24.8 millimeters

Manuel is also in Mr. Whittaker’s science class. He observed that the water level rose 1.8 millimeters per year, which matches the average annual trend. This occurred for 2.2 years. Explain how to determine the total variation in water level. How can you check your answer?

Question text not available