Comparing and Ordering Rational Numbers

Which of the following methods is NOT mentioned for comparing rational numbers?

• Using a number line

• Converting to decimals

• Finding a common denominator

• Cross-multiplying

In the cross-multiplying method, what do you do after multiplying the numerator of the first fraction by the denominator of the second fraction?

• Add the products together

• Place the product under the second fraction

• Place the product under the first fraction

• Compare the products directly

Using the cross-multiplying method, which fraction is greater: 3/5 or 4/9?

• They are equal

• Cannot be determined

• 3/5

• 4/9

What is the first step in the common denominator method?

• Cross-multiply the fractions

• Compare the numerators

• Find a common denominator

• Convert fractions to decimals

When comparing -3/4 and -9/20 using the common denominator method, which fraction is smaller?

• -3/4

• Cannot be determined

• -9/20

• They are equal

How do you convert a fraction to a decimal?

• Multiply the numerator and denominator

• Add the numerator and denominator

• Divide the numerator by the denominator

• Subtract the numerator from the denominator

Which is greater: 4 and 2/5 or 4 and 4/7?

• 4 and 2/5

• Cannot be determined

• They are equal

• 4 and 4/7

When comparing 0.342 and 0.347, which is larger?

• Cannot be determined

• They are equal

• 0.347

• 0.342

What should you do to avoid errors when comparing decimals with different numbers of digits?

• Ignore the extra digits

• Add zeros to make the number of digits equal

• Round off the numbers

• Compare only the first two digits

Which of the following is the correct order from least to greatest: 0.03, 1/7, 0.014?

• 0.03, 0.014, 1/7

• 1/7, 0.03, 0.014

• 0.014, 0.03, 1/7

• 0.014, 1/7, 0.03