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 Blank

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 Blank

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 Blank

Solve: -12.5 + 15.3

Multiple Choice

Solve:

 $-6\ \frac{1}{3}\ +\ \frac{20}{3}$  

•  $\frac{1}{3}$  

•  $6\ \frac{21}{3}$  

•  $-\frac{1}{3}$