EDM Unit 4 Review

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting the digits of a number to make it simpler while keeping its value close to what it was. For example, rounding 84.329 to the nearest tenth gives 84.3.

Front

How do you round a number to the nearest tenth?

Back

To round a number to the nearest tenth, look at the hundredths place. If it is 5 or greater, round up the tenths place by one. If it is less than 5, keep the tenths place the same.

Front

What is the mass of Amanda's rock when rounded to the nearest tenth?

Back

84.3 grams.

Front

What does it mean to express a weight in pounds as a decimal?

Back

Expressing weight in pounds as a decimal means using a number that includes a whole number part and a fractional part, such as 4.78 pounds.

Front

How do you convert a decimal to a fraction?

Back

To convert a decimal to a fraction, write the decimal over its place value (e.g., 0.75 = 75/100) and simplify if possible.

Front

What is the weight of Jennifer's potatoes in words?

Back

Four and seventy-eight hundredths of a pound.

Front

What is the process to find the actual amount of flour Jerry has left if it rounds to 124 grams?

Back

The actual amount could be any number between 123.5 and 124.4 grams.

Front

What is an ordered pair in mathematics?

Back

An ordered pair is a pair of numbers used to represent a point in a coordinate system, written in the form (x, y).

Front

How do you calculate the total money earned by Dean after running laps?

Back

Start with the initial amount and add the earnings from running laps. For example, if Dean starts with $4 and earns $2 per lap, after 4 laps he has $4 + (4 laps * $2/lap) = $12.

Front

What is the total weight of Sarah's oranges?

Back

23.4 pounds.