Integer Operations Grade 7 DR

-7 - (-14) =

• -21

• 21

• -7

• 7

(-7)  x  (-7)  =

• -14

• 14

• -49

• 49

What is the rule for subtration?

• SCC

• Same Change Change

• Keep the sign of the first number, change subtraction to addition, change the sign of the seond number -then add

• All of the above

+1 + (+1) =

• -1

• 1

• -2

• 2

-17 + 17 =

• 0

• -34

• 34

• -0

(-6) x (7) =

• 42

• -42

• 13

• -13

Whan adding two numbers with different signs

• Add and keep the sign of the "larger number"

• Just add, duh!!

• Subtract and keep the sign of the "larger number"

• I do whatever I want

-10 + (-10) =

• -100

• 20

• -20

• 100

(-10) x (1000) =

• 9990

• -9990

• -10000

• 10000

The rule for adding numders with the same sign is

• Add the numbers keep the sign

• Add the numbers change the sign

• Subtract the nymbers and multiply by 2

• IDK