Comparing and Ordering Rational Numbers

What is a rational number?

• A number that can be expressed as a ratio of two integers.

• A number that cannot be expressed as a fraction.

• A number that is always negative.

• A number that is always positive.

Where would the number 0.8 be placed in the Venn diagram?

• In the irrational number section.

• In the rational number section.

• In the integer section.

• In the whole number section.

What is the least common denominator (LCD)?

• The largest multiple of the denominators of two or more fractions.

• The smallest multiple of the denominators of two or more fractions.

• The sum of the denominators of two or more fractions.

• The difference between the denominators of two or more fractions.

How do you compare two rational numbers using their signs?

• Negative numbers are always greater than positive numbers.

• Positive numbers are always greater than negative numbers.

• Negative numbers are always equal to positive numbers.

• Positive numbers are always less than negative numbers.

Which number is greater: -1 5/6 or -1 1/6?

• -1 5/6

• -1 1/6

• They are equal.

• Cannot be determined.

What is the first step in comparing fractions using the least common denominator?

• Add the fractions together.

• Compare the numerators directly.

• Convert the fractions to decimals.

• Rewrite the fractions using the least common denominator.

How do you compare fractions using cross products?

• Subtract the numerators and compare the differences.

• Divide the numerators and compare the quotients.

• Multiply each denominator by its diagonal numerator and compare the products.

• Add the numerators and compare the sums.

Which fraction is greater: 7/12 or 8/18?

• Cannot be determined.

• They are equal.

• 8/18

• 7/12

How do you convert a percent to a decimal?

• Subtract 100.

• Add 100.

• Divide by 100.

• Multiply by 100.

What is the correct order from least to greatest for the set: 3.44, π, 3.14, and 3.4 (with 4 repeating)?

• 3.14, 3.44, π, 3.4 (with 4 repeating)

• π, 3.14, 3.44, 3.4 (with 4 repeating)

• 3.14, π, 3.4 (with 4 repeating), 3.44

• 3.14, π, 3.44, 3.4 (with 4 repeating)