so 7907 is lessthanthe ader number

jackie, you are correct, 7907 *is less than* 7970. One way to show that something is _"less than"_ something else (in mathematics) is to use the "`<`" symbol. So, as Sal explains at 1:07, when you use the "`<`" symbol you are saying that the number on the left of the symbol is _"less than"_ the number on the right. This means that you would write the comparison as: `7907 < 7970`

What is the difference between natural numbers and whole numbers? My 3rd Grade teacher only uses the word "natural numbers" but the title says " Comparing whole number place values" .

How about negative numbers ? Is -1 a whole number ?

every negitive number is a whole number.

Negative numbers are not considered whole numbers, just the counting numbers 0, 1, 2, … If you want to include the negatives of the counting numbers, you have to say they are integers. There are also negative numbers which are not integers such as -1.5.

Can math get harder than: place value when multiplying and dividing by 10.

Yes, math can get harder than this. There’s multi-digit multiplication (by numbers other than just 10), multi-digit division (by numbers other than just 10), operations with fractions, operations with decimals, percents, conversion between fractions & decimals & percents, exponents & roots, operations with signed numbers (positives and negatives), pre-algebra, algebra 1 & 2, geometry (which could have proofs), trigonometry, probability & statistics, pre-calculus, calculus, and much more! There is always something new and interesting to learn in math. Have a blessed, wonderful day!

Main content

4th grade

Course: 4th grade > Unit 1

Lesson 6: Comparing multi-digit numbers

Comparing whole number place values

Name: Comparing whole number place values
Uploaded: 2013-08-08T01:01:58Z
Description: Sal compares whole numbers written in expanded form, written form, and number form.

CCSS.Math:

4.NBT.A.2

Google Classroom

Sal compares whole numbers written in expanded form, written form, and number form. Created by Sal Khan.

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so 7907 is lessthanthe ader number
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- Project
  Posted 10 years ago. Direct link to Project's post “jackie, you are correct, ...”
  jackie, you are correct, 7907 is less than 7970.
  One way to show that something is "less than" something else (in mathematics) is to use the "<" symbol. So, as Sal explains at
  1:07
  , when you use the "<" symbol you are saying that the number on the left of the symbol is "less than" the number on the right. This means that you would write the comparison as:
  7907 < 7970
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What is the difference between natural numbers and whole numbers? My 3rd Grade teacher only uses the word "natural numbers" but the title says " Comparing whole number place values" .
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  How about negative numbers ? Is -1 a whole number ?
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every negitive number is a whole number.
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- David Severin
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Can math get harder than: place value when multiplying and dividing by 10.
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- Ian Pulizzotto
  Posted 7 months ago. Direct link to Ian Pulizzotto's post “Yes, math can get harder ...”
  Yes, math can get harder than this. There’s multi-digit multiplication (by numbers other than just 10), multi-digit division (by numbers other than just 10), operations with fractions, operations with decimals, percents, conversion between fractions & decimals & percents, exponents & roots, operations with signed numbers (positives and negatives), pre-algebra, algebra 1 & 2, geometry (which could have proofs), trigonometry, probability & statistics, pre-calculus, calculus, and much more! There is always something new and interesting to learn in math.
  
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Video transcript

Compare the expressions on both sides of the question marks. So on the left-hand side of the question mark, I have 7,907. So, it's 7,000 plus 900 plus 7, which is going to be the same thing as 7,907. Now let's compare that to what we have on the right-hand side of the question mark. On the right-hand side, we have 7,000 plus 970, which is 7,970. Or if we wanted to expand it out, we could write that as 7,000 plus 900 plus 70, and then we have 0 ones. So if we compare place value by place value, we have 7,000 in either case. So the thousands place is the same. We have the same number of hundreds. We have 9 hundreds. But here we have no tens, and we have a 7. And here we have no ones, and we have 70. And clearly, 70 is greater than 7. So the number on the right is greater than the number on the left, or the number on the left is less than the number on the right. I always remember the less than symbol because it points to the smaller number, or either of these symbols point to the smaller number. So this right over here would mean greater than. You have the larger number on the left. This is less than. You have the smaller number on the left. So we would go with less than. This is less than that.