Adding/Subtracting Rational Numbers(Rules)

You owed to Mrs. Ivanova two assignments, and turned in one. Which expression describes what happened?

• 2 - 1

• -2 + 1

• -2 - 1

• 2 + 1

You owed to Mrs. Ivanova 4 assignments, and turned in three. Do you owe any?

• Yes, one.

• Yes, two.

• No.

• Yes, three.

I add two numbers with the same sign.

• I need to add absolute values.

• I need to subtract absolute values.

I add two numbers with diffrent signs.

• I need to add absolute values.

• I need to subtract absolute values.

(-3) + (-16) =

• -19

• -13

• 13

• 19

Which of the sentences describes the problem below:
-10 + (-6)

• You owed $10 to cafeteria and paid back $6

• You owed $10 to cafeteria andbought a meal for $6

• You owed $10 then your mom put $6 onto your account

Which sentence describes the following problem:

-3 + 7

• You owed $3 to your friend then gave him $7

• You owed $3 to your friend then borrowed $7 more

• You gave $3 to your friend then gave him another $7

How we can re-write the following subtraction problem:

10 - 46 =

• 10 + 46

• 10 + (-46)

• -10 + 46

• -10 - 46

How we can re-write the following subtraction problem:

10 - (-46) =

• 10 + 46

• 10 - 46

• -10 - 46

• -10 - 46

How we can re-write the following subtraction problem:

10.5 - (-4.6) =

• 10.5 + 4.6

• 10.5 + (-4.6)

• 10.5 - 4.6

• 10.5 - (+4.6)