If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Lesson 1: How 10 relates to place value

# Place value when multiplying and dividing by 10

Lindsay discusses how multiplying and dividing by 10 affects place value.

## Want to join the conversation?

• If you multiply 10 x 9 you add a zero
Why don't you get 90 when the problem is 9 x 0
• What she meant when she said "if you multiply 10 x 9 you add a zero," what she meant was you add a zero to the answer you got. because 10 x 9 = 90. see? there is a zero at the end! :3
• when we multiply a number by 5 , the number has __ or __ in the one place.
• Like skip counting by 5 like 5 10 15 20 26 30 35 40 45 50 55 60 you can go to 100 65 70 75 80 85 90 95 100
• If you just divide a number by ten and it has zeros, take out a zero. Very easy
• right! just remember that the zeroes you take out have to be at the end, like 100, not 101
• how do the videos give you 850 energy points but a quiz only like 210??!!
• i have no idea
(1 vote)
• my fave part is when she said sm- smaller
• Why do these videos seem boring but actually help me with my math sometimes?
• These videos don't have entertaining music playing or flashy animation moving around in the lesson. Just straight forward learning. It can be quite boring because it literally just listening
• You don't add a 0 you move the number up a place value.