IXL - Quantities that combine to zero: word problems (Algebra 1 practice)

In which story is the answer to the question 0?

Emmet went ice fishing with his uncle in northern Canada. The temperature of the air that day was 1°C. Emmet cut a hole in the ice and used a thermometer to find that the temperature of the salt water below was 1°C colder than the air. What was the temperature of the salt water?

Emmet went ice fishing with his uncle in northern Canada. The temperature of the air that day was 1°C. Emmet cut a hole in the ice and used a thermometer to find that the temperature of the salt water below was -1°C. How much warmer was the air than the salt water?

ref_doc_title.

Learn with an example

question

In which story is the answer to the question 0?

Tara took an ice pack out of the freezer to cool down after her morning run. When she took it out of the freezer, the temperature of the ice pack was -18°C. After holding on to the ice pack for an hour, the temperature rose to 18°C. How much warmer is the ice pack now than it was when Tara took it out of the freezer?

Tara took an ice pack out of the freezer to cool down after her morning run. When she took it out of the freezer, the temperature of the ice pack was -18°C. After holding on to the ice pack for an hour, the temperature rose 18°C. What is the temperature of the ice pack now?

solution

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

Read the first story.

You want to know how much warmer the ice pack is now than it was when Tara took it out of the freezer.

18 is 36 more than -18. So, the ice pack is 36°C warmer now than it was when Tara took it out of the freezer.

Read the second story.

Tara took an ice pack out of the freezer to cool down after her morning run. When she took it out of the freezer, the temperature of the ice pack was -18°C. After holding on to the ice pack for an hour, the temperature rose 18°C. What is the temperature of the ice pack now?

The temperature of the ice pack was -18°C when Tara took it out of the freezer, which is 18°C below

zero.

Then the temperature increased

18°C.

18 more than -18 is 0. So, the temperature of the ice pack is 0°C now.

Looking for more? Try these:

Lesson: Additive inverses

Lesson: Integers

$Confetti$

Excellent!

Now entering the Challenge Zone—are you ready?

Questions
answeredQuestions

Time
elapsedTime

hr	min	sec
00	00	02

SmartScore
out of 100
IXL's SmartScore is a dynamic measure of progress towards mastery, rather than a percentage grade. It tracks your skill level as you tackle progressively more difficult questions. Consistently answer questions correctly to reach excellence (90), or conquer the Challenge Zone to achieve mastery (100)! Learn more

Teacher tools

Work it out

Not feeling ready yet? These can help:

O.4Understanding opposite integers

A.1Understanding integers

Lesson: Additive inverses

Lesson: Integers

Excellent! You got that right!

Jumping to level 1 of 1

Excellent!