Adding Rational Numbers

Fill in the blank for the following rule: If the rational numbers have same signs, ______________ the absolute values and keep the common sign.

• add

• subtract

• multiply

• divide

-2.61 + (-6.88)

• 9.49

• -9.49

• 4.27

• -4.27

Mr. Smith has an account balance of -$275.78.  He deposits $539.20 into his account.  What is Mr. Smith's account balance now?

• $813.98

• $263.42

• $539.78

• $345.98

What is the value of the following expression?

• -72

• -8 and 2/3

• 40 and 1/3

• 72

-2/7 + (-2/3)

• -21/20

• 21/20

• 20/21

• -20/21

-51 + 81.623

• 30.623

• -30.623

• 132.623

• -132.623

-13/8 + 7/8

• 4/3

• 3/4

• -3/4

• -4/3

5/7 + (-9/7)

• -4/7

• -7/4

• 4/7

• -7/4

Add. 

• -3

• 0.8

• -4

• 4

What is the value of (-4) + 8 - 5 ?

• -1

• 1

• 7

• -9