Unit 2 Part B Pretest

Front

What is the equivalent fraction of \( \frac{5}{9} \)?

Back

\( \frac{15}{27} \) is equivalent to \( \frac{5}{9} \).

Front

If Emily has $15.75 and spends $7.68 on lunch, how do you calculate the amount left?

Back

Subtract the amount spent from the total: $15.75 - $7.68 = $8.07.

Front

What is the sum of \( \frac{3}{9} + \frac{4}{9} \)?

Back

The sum is \( \frac{7}{9} \).

Front

How do you divide fractions, specifically \( \frac{1}{4} \div \frac{1}{2} \)?

Back

To divide fractions, multiply by the reciprocal: \( \frac{1}{4} \times \frac{2}{1} = \frac{2}{4} = \frac{1}{2} \).

Front

What is the result of adding 5.6 and 3.39?

Back

The result is 8.99.

Front

What is the process to convert a fraction to an equivalent fraction?

Back

Multiply the numerator and denominator by the same non-zero number.

Front

How do you simplify the fraction \( \frac{3}{9} \)?

Back

Divide both the numerator and denominator by their greatest common divisor (GCD), which is 3: \( \frac{3 \div 3}{9 \div 3} = \frac{1}{3} \).

Front

What is the definition of a reciprocal in mathematics?

Back

The reciprocal of a number \( x \) is \( \frac{1}{x} \).

Front

How do you perform addition with decimals?

Back

Align the decimal points and add as you would with whole numbers.

Front

What is the least common multiple (LCM) of 3 and 9?

Back

The LCM of 3 and 9 is 9.