IXL | Compare numbers written in scientific notation

Which sign makes the statement true?

2.5

–

2.5

–

ref_doc_title.

Learn with an example

question

Which sign makes the statement true?

2.5

–

2.5

–

key idea

A number written in scientific notation has two factors multiplied together. The first factor must be at least 1 and less than 10, and the second factor must be a power of 10.

To compare two numbers written in scientific notation, first compare the powers of 10. If the powers of 10 are equal, then compare the coefficients.

solution

Both numbers are written in scientific notation. To compare them, look at the powers of 10.

2.5

–

2.5

–

is larger than

–

2.5

–

is greater than

2.5

–

2.5

–

2.5

–

Looking for more? Try these:

Lesson: Scientific notation

$Confetti$

Excellent!

Now entering the Challenge Zone—are you ready?

Questions
answeredQuestions

Time
elapsedTime

hr	min	sec
00	00	04

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:

D.1Convert between standard and scientific notation

C.2Compare and order decimals

Lesson: Scientific notation

Excellent! You got that right!

Jumping to level 1 of 1

Excellent!