Adding and Subtracting Rational Numbers

Adding and Subtracting Rational Numbers

Read each question carefully and solve. Show your work for full credit.

1. Add the following fractions. Simplify your answer to the lowest terms:

a) 3/4 + 1/8

b) 2/3 + (-1/6)

2. Subtract the following fractions. Simplify your answer to the lowest terms:

a) 5/6 - 1/3

b) 7/10 - (-1/5)

3. Fill in the blanks with the correct answer:

a) 2.5 + 3.75 =  

b) 8.2 - 4.9 =  

c) -1.5 + 0.75 =  

d) -3.2 - (-1.8) =  

4. What is the sum of -2 1/2 and 1 3/4?

5. True or False: When adding two rational numbers with different signs, you always subtract their absolute values and keep the sign of the number with the larger absolute value.

6. A recipe calls for 1 1/4 cups of flour. If you only have 3/4 cups of flour, how much more flour do you need?