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## Early math review

### Course: Early math review > Unit 6

Lesson 1: Skip counting by 100s# Skip-counting by 100s

Sal counts by 100s.

## Want to join the conversation?

- if i can count by 5s, 10s, 100s and 1000s will i be able to count by 2000(7 votes)
- Yes you can count by any number! For example, you can count by 369s (hard, but you still could)! I hope this helps!(8 votes)

- Skip counting by 100s must be very easy because just like skip counting by 1s or 10s you need to memorize the 100s. It goes like 100, 200, 300, 400, 500, 600, 700, 800, 900, 1,000?(8 votes)
- yes is like that(1 vote)

- skipping numbers is very good to learning to count by numbers by 1s to 10s(4 votes)
- So, is there usually a comma between the first number (in the thousands place) and the second number in a number (in the hundreds place) like 1,832?(4 votes)
- yes you can add a comma whenever the number goes up a place value. (Example, the number is 1 million. 1,000,000)(4 votes)

- I do not understand but if any of you do can you please help me ?(4 votes)
- Yes you just raise the number in the hundreds place like this ex: 100, 200, 300, 400 , 500 and ex.(3 votes)

- when counting by 5s, what number would we say?there's 103,107,112,115,117,122,127 and 130.tell me all(3 votes)
- We would say all the numbers ending with a 5 or 0 if we start counting from 0(4 votes)

- so i can count by 1000 right(2 votes)
- Yeah, you'd be able to count by any number, including 1000(2 votes)

- how do you go backwards in order?(2 votes)
- You subtract by 1 or more as much as you want. It can go to negative infinity just like positive infinity.(1 vote)

- 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290 300(2 votes)
- bruh noob parker wright.(2 votes)

## Video transcript

- [Voiceover] When
counting by 100s from 43 to 1,043, which numbers will we say? Select all that apply. So let's do that. Let's start with 43 , and then let's just keep adding 100 to 43. So if we add 100 to 43,
we're going to get 143. Now let's keep adding 100 to it. If we add another 100, we're now going to have two hundreds and 43, or 243. Now let's keep adding 100 to it. So if we add another 100
we're going to have 343. I think you see what's going on here. You add 100 again,
you're going to have 443. I'm coloring in the 100s place so that we can keep track of that. You add another 100,
you're going to have 543. Then add another 100,
you're going to have 643. Add another 100, you're going to have 743. Let's keep adding 100, keep adding 100. Add another 100, you're going to have 843. Add another 100, you're going to have 943. Or you can do that as
nine hundreds and 43. Or nine hundreds and
four tens and three ones. And let's add another 100. So if you add another
100, you could view this as 10 hundreds and 43. But 10 hundreds is the
same thing as 1,000. So we would read this as 1,043. And that's what they
wanted us to count up to 1,043 is the same thing
as 10 hundreds and 43. So which of these numbers did we see when we counted from 43 to 1,043? Well we didn't see 44. We didn't see 123. But we did see 143, so we did see 143. We saw 543, we saw 543. And we saw 843. So we saw these numbers. Now you might have been able
to do this in your head. You might have said, "OK
43, then 143, then 243, 343, 443, 543, 643, 743,
843, then 943 and then 1,043. Either way, these are the numbers that we said when we
counted from 43 to 1,043. These are three of the
numbers that we said.