Math review

What is the formula for multiplying fractions?

• Multiply the numerators together and the denominators together: \(\frac{a}{b} \times \frac{c}{d} = \frac{a \times c}{b \times d}\)

• Add the numerators together and the denominators together: \(\frac{a}{b} + \frac{c}{d} = \frac{a + c}{b + d}\)

• Multiply the denominators together and add the numerators together: \(\frac{a}{b} \times \frac{c}{d} = \frac{a + c}{b \times d}\)

• Divide the numerators together and the denominators together: \(\frac{a}{b} \div \frac{c}{d} = \frac{a \div c}{b \div d}\)

How do you find the least common denominator (LCD) of two fractions?

• The least common denominator is the smallest multiple that both denominators share.

• The least common denominator is the sum of both denominators.

• The least common denominator is the product of both denominators.

• The least common denominator is the average of both denominators.

What is the rule for dividing fractions?

• To divide fractions, multiply by the reciprocal of the second fraction: \(\frac{a}{b} \div \frac{c}{d} = \frac{a}{b} \times \frac{d}{c}\)

• To divide fractions, add the numerators and denominators of both fractions.

• To divide fractions, subtract the second fraction from the first fraction.

• To divide fractions, multiply both fractions together without changing anything.

What does it mean to simplify a fraction?

• To reduce it to its lowest terms.

• To convert it into a decimal.

• To multiply the numerator and denominator by the same number.

• To add the numerator and denominator together.

What is the product of \(\frac{3}{10} \times \frac{2}{4}\)?

• \(\frac{1}{5}\)

• \(\frac{3}{20}\)

• \(\frac{1}{10}\)

• \(\frac{3}{8}\)

What is the result of multiplying these fractions? \(\frac{1}{5} \times \frac{1}{1}\)

• \(\frac{1}{5}\)

• \(\frac{1}{1}\)

• \(\frac{1}{10}\)

• \(\frac{2}{5}\)

What is the definition of absolute value?

• The absolute value of a number is its distance from zero on the number line, regardless of direction.

• The absolute value of a number is the number itself if it is positive, and its opposite if it is negative.

• The absolute value of a number is the square of the number.

• The absolute value of a number is the maximum value in a set of numbers.

What is the result of \(\frac{5}{6} - \frac{1}{3}\)?

• \(\frac{1}{4}\)

• \(\frac{1}{2}\)

• \(\frac{1}{3}\)

• \(\frac{2}{3}\)

What do you need to have when adding unlike fractions?

• Common denominator

• Same numerator

• Different denominators

• No denominator needed

What is \(\frac{11}{14} - \frac{3}{14}\)? Remember to simplify where necessary.

• \(\frac{1}{2}\)

• \(\frac{3}{14}\)

• \(\frac{4}{7}\)

• \(\frac{5}{14}\)