IXL | Quantities that combine to zero: word problems

In which story is the answer to the question 0?

An orca whale is swimming at an elevation of -25 meters. She swims down 25 meters in elevation to join her pod. At what elevation is the orca whale swimming now?

An orca whale is swimming at an elevation of -25 meters. She swims up 25 meters in elevation to join her pod. At what elevation is the orca whale swimming now?

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question

In which story is the answer to the question 0?

Krysta was playing street hockey with friends in her neighborhood. They created a game where you earn a point for each goal but lose a point for each shot that gets blocked. Krysta's team ended with -15 points. The opposing team ended with 15 more points than Krysta's team. How many points did the opposing team end with?

Krysta was playing street hockey with friends in her neighborhood. They created a game where you earn a point for each goal but lose a point for each shot that gets blocked. Krysta's team ended with -15 points. The opposing team ended with 15 fewer points than Krysta's team. How many points did the opposing team end with?

solution

You want to find which story has 0 as the answer to the question.

Read the first story.

Krysta was playing street hockey with friends in her neighborhood. They created a game where the opposing team loses a point for every blocked shot. Krysta's team ended with -15 points. The opposing team ended with 15 more points than Krysta's team. How many points did the opposing team end with?

Krysta's team ended with -15 points. The opposing team ended with 15 more points than Krysta's team.

15 more than -15 is 0. So, the opposing team ended with 0

points.

Read the second story.

Krysta was playing street hockey with friends in her neighborhood. They created a game where the opposing team loses points for every blocked shot. Krysta's team ended with -15 points. The opposing team ended with 15 fewer points than Krysta's team. How many points did the opposing team end with?

Krysta's team ended with -15 points. The opposing team ended with 15 fewer points than Krysta's team.

15 less than -15 is -30. So, the opposing team ended with -30

points.

Looking for more? Try these:

Lesson: Additive inverses

Lesson: Integers

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Not feeling ready yet? These can help:

O.4Understanding opposite integers

A.1Understanding integers

Lesson: Additive inverses

Lesson: Integers

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