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CCSS Math: 4.NBT.A.1

The 4 in the number
5,634 is blank times blank than the 4 in
the number 12,749. So let's think about
what they're saying. So the 4 in the number 5,634,
that's literally in the ones place. It literally just represents 4. Now, the 4 in the number 12,749,
that 4 is in the tens place. It represents 40. So this 4, it's a 10 times
smaller value than this 4. Or this 4, I should say. This 4 right over
here represents 4, while this represents 40. So it is 10 times smaller
than the 4 in 12,749. 4 by itself is 10
times smaller than 40. Make sure I got
the right answer. Let's do another one. In the number 3,779,264,
how many times less is the value of the second 7
than the value of the first 7? How many times less is
the value of the second 7 than the value of the first 7? So the second 7 right over here,
that's in the ten thousands place. It literally represents 70,000,
7 ten thousands, or 70,000, while this represents 700
thousands, or 700,000. So the second 7 is 1/10
the value of the first 7. Or another way of thinking,
it's 10 times less. This is 70,000, and
this is 700,000. So the value of the
second 7 is 10 times less than the value of the first 7. Let's do one more. This is fun. Fill in the following
blanks to complete the relationships
between 25,430 and 2,543. All right, so 25,430 is 10
times larger than 2,543. Literally, you take this,
you multiply it by 10, you're going to get 25,430. The digits in
25,430 are one place to the blank of the digits
in the number 2,543. Well, let's think about it. Here you have a 2 in
the thousands place. Here you have a 2 in
the ten thousands place. Here you have a 5 in
the hundreds place. Here you have a 5 in
the thousands place. And we could keep going. But what we see is a
corresponding digit. In 25,430, they're one place
to the left of the digits right over here. Now, finally, we're
going to take 25,430 and divide it by 2,543. Well, we already know that the
first number is 10 times larger than this number
right over here. So literally, if you divide the
smaller number into the larger one, you're going to get 10. This right over here is
10 times larger than this. So that was the first part of
the question, and we are done.