Topic 1 - Understand Decimal Place Value

A national park has eighty thousand, nine-hundred twenty-three and eighty-six hundredths acres of land. Which shows this in standard form?

• 80,923.086

• 80,923.68

• 80,923.806

• 80,923.86

Select all the comparisons that are true.

• 4.15 > 4.051

• 1.054 > 1.45

• 5.14 < 5.041

• 5.104 < 5.41

• 5.014 < 5.41

Which statements about the values of 2.044 and 20.44 are true? Select all that apply.

• 2.044 is $\frac{1}{10}$ of 20.44

• 2.044 is $\frac{1}{100}$ of 20.44

• 20.44 is 10 times 2.044

• 20.44 is 100 times 2.044

• 2.044 is 10 times 20.44

The weight of Darrin’s phone is 3.405 ounces. What is 3.405 written in expanded form?

• $3\times1+4\times\frac{1}{10}+5\times\frac{1}{1,000}$

• $3\times10+4\times\frac{1}{10}+5\times\frac{1}{1,000}$

• $3\times10+4\times\frac{1}{10}+5\times\frac{1}{100}$

• $3\times1+4\times\frac{1}{100}+5\times\frac{1}{1,000}$

Kendra and her horse completed the barrel racing course in 15.839 seconds. What is this number rounded to the nearest tenth?

Elaine has a piece of wire that is 2.16 meters long. Dikembe has a piece of wire that is 2.061 meters long. Whose piece of wire is longer?

What is 90.125 written in word form?

• ninety-one and twenty-five hundredths

• ninety-one and twenty-five thousandths

• ninety and one hundred twenty-five tenths

• ninety and one hundred twenty-five thousandths

A racecar driver holds the record for the fastest speed of 212.809 miles per hour. What is 212.809 rounded to the nearest hundredth? Enter your answer in the box.