Adding and Subtracting Rational Numbers Practice

Adding and Subtracting Rational Numbers Practice

Multiple Choice

When adding fractions with unlike denominators, what must you do first?

• Add the numerators

• Add the denominators

• Find a common denominator

Fill in the Blanks

When adding rational numbers with the same sign, add the numbers and

the sign.

Multiple Choice

When adding rational numbers with different signs, find the _________________ and keep the sign of the number with the larger absolute value.

• sum

• difference

• product

• quotient

Multiple Choice

When adding or subtracting decimals, the key is to ___________.

• line up the decimals.

• change the numbers to fractions.

Fill in the Blanks

Solve: -8.15 + (-4.3)

Multiple Choice

 $Solve:\ \ \ \ -\frac{7}{8}\ +\ \frac{1}{4}$  

•  $\frac{9}{8}$  

•  $\frac{5}{8}$  

•  $\frac{6}{12}$  

•  $-\frac{5}{8}$  

Fill in the Blanks

Solve: -12.5 + 15.3

Multiple Choice

Solve:

 $-6\ \frac{1}{3}\ +\ \frac{20}{3}$  

•  $\frac{1}{3}$  

•  $6\ \frac{21}{3}$  

•  $-\frac{1}{3}$