### Video Transcript

Place Value of Two-Digit
Numbers

In this video, we will learn how to
represent numbers up to 100 in place value tables or charts and say the value of
each digit.

Zero is a digit, so is one, two,
three, four, five, six, seven, eight, and nine. If we put two digits together, we
make a two-digit number. We used the digits three and eight
to make a two-digit number. Do you know what the number is? It’s the number 38. If we swap the digits around, we
can make a different two-digit number. Which number have we made? It’s number 83.

You can tell the value of each
digit in a two-digit number by its place. Let’s look again at the number
38. The three digit is worth three
10s. And the eight digit is worth eight
ones. How much are three 10s worth? 10, 20, 30. So, the three digit is worth
30.

The eight is in the ones place. It’s worth eight ones. 30 and eight makes the number
38. What happens if we swap the digits
around? This time, the eight digit is worth
eight 10s. 10, 20, 30, 40, 50, 60, 70, 80. The eight digit is worth 80. Eight 10s are 80. The three digit is in the ones
place in the place value chart, which means it’s worth three ones. Eight 10s and three ones makes
83.

You can tell the value of a digit
in a two-digit number by its place. This three digit is worth three
10s. And the eight digit is worth eight
ones. The eight digit in this number is
worth eight 10s. 10, 20, 30, 40, 50, 60, 70, 80. The eight digit is worth 80. And the three digit is worth three
ones or three.

Let’s practice reading numbers up
to 100 in place value tables and saying the value of each digit. Remember, two-digit numbers have
two digits, a tens digit and a ones digit.

What number does the table
show.

We’re a given a place value
table. There’s a five digit in the tens
place and a two digit in the ones place. Five 10s are worth 50. 10, 20, 30, 40, 50. So, we know the five digit is worth
50. The two digit is worth two
ones. 50 and two makes the number 52. The number shown in the table is
the number 52.

Isabella made a number in this
place value chart. Her number has zero ones. How many groups of 10 does her
number have? Which place value chart shows the
number she made?

Isabella has made a number in this
place value chart. And the question tells us that her
number has zero ones. The first part of the question asks
us how many groups of 10 her number has. In other words, how many 10s are
there in the tens place? Let’s count them. One, two, three, four, five, six,
seven. We know that seven 10s are worth
70.

The question tells us that
Isabella’s number has zero ones. Isabella has made the number
70. Which of the place value charts
shows seven 10s and zero ones. It’s not the first place value
chart because it has zero 10s and seven ones. The digits in this place value
chart are the wrong way round. This place value chart has seven
10s and zero ones. This is the number 70. So, this is the correct place value
chart. This place value chart has seven
10s and seven ones. But Isabella’s number has zero
ones.

Isabella made the number 70. The place value chart which shows
the number she made is the one in the middle. Seven 10s and zero ones makes the
number 70.

Find the value of the underlined
digit in the number 62.

We can use a place value chart to
help us answer this question. The six digit in the number 62 is
in the tens place. 62 has six 10s. Six 10s are 60. So, the six digit in the number 62
is worth 60. The two digit is in the ones place,
so it’s worth two ones. The underlined digit in the number
62 is worth two ones.

What number am I? I have two digits. I have zero ones. I have a nine in the tens
place.

In this question, we’re given some
clues about a mystery number. The first clue tells us that this
is a two-digit number. So, we can use a place value chart
to help. Our second clue tells us that the
mystery number has zero ones. So, we can write a zero in the ones
place. Our final clue tells us that the
mystery number has a nine in the tens place. So, let’s write a nine in the tens
place on the place value chart.

What number have we made? It’s the number 90, nine 10s and
zero ones. The mystery number is 90.

What are the greatest and smallest
two-different-digit numbers that can be made with the digits nine, four, and
three?

In this question, we’re being asked
to make two numbers using the digits nine, four, and three. We could use digit cards to
help. We have to find the greatest and
the smallest two-digit numbers we can make. The question also tells us that the
digits have to be different in our two-digit numbers. This means that we can’t use the
same digit twice in a number. Each of our numbers has to have two
different digits. Let’s use place value charts to
help.

What is the greatest number we
could make with the digits nine, four, and three? We know greatest means the number
with the most value. Which digit could we put in the
tens place to make the greatest number? Nine, four, or three? We should put the nine digit in the
tens place because this is the digit which has the greatest value. Nine 10s are 90.

Which digit should we position in
the ones place? Which is worth more? Four or three? Four is worth more than three. So, the greatest number we can make
with the digits nine, four, and three is the number 94. Nine 10s are worth 90. Four ones are worth four. 90 and four makes 94.

What’s the smallest two-digit
number we could make with the digits nine, four, and three? Remember, we can’t use the same
digit twice in this number. Which of our three digits has the
least value? Nine, four, or three? We need to put the digit with the
least value in the tens place in the chart. The digit with the least value is
three. Three 10s are worth 30. 10, 20, 30. Three 10s are less than four 10s or
nine 10s.

Which of our remaining digits is
worth the least? Is it nine or four? Four is worth less than nine. Three 10s are worth 30. Four ones are worth four. 30 and four makes 34.

We used the digits nine, four, and
three to make the greatest and smallest two-different-digit numbers. The greatest number is 94, and the
smallest number is 34.

What have we learned in this
video? We’ve learned that two-digit
numbers have a tens digit and a ones digit. We’ve also learned how to use a
place value chart to help us understand the value of each digit.