positive and negative integers

8 + (-2)

(a)  

-5 + 9 = ?

(a)  

2 + (-8) = ?

(a)  

When you are asked to subtract integers, you first need to ...

• Change the operation to addition

• Change the sign of the first integer

• Change the sign of the second integer

• Leave the operation as it is

12 + (-2)

• -10

• -14

• 14

• 10

30 times -90

• -2,700
• 2,700
• -200
• -625

100+ (-30)=

• -30

• -70

• 70

• 30

• 42
• -42
• -58
• 58

Which decimal is LESS THAN the decimal represented below?

• 0.30
• 0.45
• 0.73
• 3.1

Adding integers with different signs you

• add the numbers and forget the sign

• subtract the integers and keep the sign of the greatest absolute value.

• turn the sign negative

• turn the sign positive