1.2 Adding Rational Numbers

Fill in the blank for the following rule: If the rational numbers have different signs, ____________________ the absolute values and keep the sign of the number with the biggest absolute value.

• add

• subtract

• multiply

• divide

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

Which situation could be represented by the equation: - 30 + 30 = 0 ?

• Jacob bought a hat for $30. He then bought some headphones for $30.

• Charmeal loaned $30 to her brother. She then paid her back $30 the next day.

• Shoney drove 30 miles to the library. She then drove 30 more miles to her college.

• Alysha filled a tank with 30 gallons of water. She then filled the tank with 30 more gallons.

- 12 + - 8

• - 20
• 20
• 4
• -4

• 7
• 5
• -7
• -5

Which number is an example of an integer?

• 1/8

• .39

• -7

• 8.3

• -5 + 3 = -2
• 5 + (-3) = 2
• 5 + 3 = 8
• -5 + (-3) = -8

• 4 + 3 = 1
• 4 + (-3) = 1
• -4 + 3 = -1
• -4 + (-3) = -1

l - 4 l  + l -1 l

• 5
• 3
• 4
• -5

Evaluate the expression.
|–5| + 8

• 3
• 13
• -13
• -3