Adding Integers (pre-algebra)

Which expression has the same value as the one below? 8 + [4 + (-9)]

12 + (-9)

What is the value of the expression below? -8 + 19 + 8

19

Dan is using tiles to add -8 + 6. He begins with the tiles shown below. What is the sum of -8 + 6?

-2

Indira is using a number line to add -1 + (-3). She begins by showing -1 on the number line, as shown below. What is the sum of -1 + (-3)?

-4

What is the value of the expression? -16+12

-4

Which expression has the same value as the one below? 22 + (-32)

22 + (-22) + (-10)

Which addition does the model below represent?

3 + (-4)

Morena, a scuba diver, used the expression below to describe her position in relation to sea level. 0 + (-15) + 6 Which statement could describe the diver's movements?

Morena started at sea level, dove down 15 feet, then rose up 6 feet.

Rita is adding 3 + (-8) + 1. She rewrites the expression as 3 + (-1) + 8. What is Rita's error?

She switched the negative signs for -8 and 1.

Sean says that to add a number to -100 and still have -100 is to add zero. Candice says that she can add two numbers to -100 and still have -100. Who is correct and why?

They are both correct because adding two numbers that are opposites is equivalent to adding zero.