Whenever you move a digit one space to the left in a place value chart, the value of the digit becomes ten times larger.

Let's use this idea to compare the size of the digit 3 in the following two numbers:

{\color{blue}3}8, \qquad 97{\color{red}3}

We can compare the relative sizes of the digit 3 for each number using a place value chart:

  • First, we write down the place value chart for {\color{blue}{3}}8{:}

    hundreds tens ones
    \color{lightgray}{0} \color{blue}3 \color{lightgray}{8}
  • Then, we write down the place value chart for 97{\color{red}{3}}{:}

    hundreds tens ones
    \color{lightgray}{9} \color{lightgray}{7} \color{red}3
  • To compare the sizes of the two digits, we need to move one place to the left.

    hundreds tens ones
    \color{blue}3 \color{red}3

Since the digit \color{blue}3 in {\color{blue}3}8 is once space to the left of the digit \color{red}3 in 97{\color{red}3}, we can make the following conclusion:

The value of the digit \color{blue}3 in {\color{blue}3}8 is 10 times larger than the value of the digit \color{red}3 in 97{\color{red}3}.

FLAG

Find a number in which the digit 5 has a value that is 10 times larger than the value of the digit 5 in 57.

EXPLANATION

Whenever you move a digit one space to the left in a place value chart, the value of the digit becomes ten times larger.

Let's start by writing down the place values for 57.

hundreds tens ones
\color{lightgray}{0} \color{red}5 \color{lightgray}7

We need to find a number in which the digit \color{blue}5 has a value that is 10 times larger than that of tens. So, we move 1 step left in the place value chart:

hundreds tens ones
\color{blue}5 \color{red}5

Therefore, the required number is any number that has the digit 5 in the hundreds place. For example, \bbox[2px,lightgray]{\color{blue}5}12.

FLAG

What is missing in the following sentence?

The value of the digit $9$ in $2,941$ is $\underline{\phantom{0000000000000000000000}}$ than the value of the digit $9$ in $197.$

a
$10$ larger
b
$100$ times larger
c
$10$ times smaller
d
$10$ times larger
e
$100$ larger

In which of the following numbers does the digit $5$ have a value that is $10$ times larger than the value of the digit $5$ in $659?$

a
$350$
b
$715$
c
$58$
d
$5,329$
e
$582$

Let's compare the value of the digit 2 in the following two numbers:

4,{\color{blue}2}11, \qquad 1{\color{red}2}

  • First, we write down the place value chart for 4,{\color{blue}2}11{:}

    thousands hundreds tens ones
    \color{lightgray}4 \color{blue}2 \color{lightgray}1 \color{lightgray}1
  • Then, we write down the place value chart for 1{\color{red}2}{:}

    thousands hundreds tens ones
    \color{lightgray}{0} \color{lightgray}{0} \color{lightgray}1 \color{red}2
  • To compare the sizes of the two digits, we need to move two places to the left:

    thousands hundreds tens ones
    \color{blue}2 \color{red}2

Now, note the following:

  • Whenever you move a digit one space to the left, the value of the digit becomes 10 times larger.

  • So, whenever you move a digit two spaces to the left, the value of the digit becomes 10\times 10 = 100 times larger!

Therefore, we can make the following conclusion:

The value of the digit \color{blue}2 in 4,{\color{blue}2}11 is 100 times larger than the value of the digit \color{red}2 in 1{\color{red}2}.

Let's now see what happens when we move a digit three spaces to the left.

FLAG

Find a number in which the digit 6 has a value that is 1,000 times larger than the value of the digit 6 in 3,465.

EXPLANATION

Whenever you move a digit one space to the left in a place value chart, the value of the digit becomes ten times larger.

Let's start by writing down the place value chart for 3,465.

ten-thousands thousands hundreds tens ones
\color{lightgray}{0} \color{lightgray}3 \color{lightgray}4 \color{red}6 \color{lightgray}5

We need to find a number in which the digit \color{blue}6 has a value that is 1,000 times larger than that of tens.

Notice that,

1,000 = \underbrace{10 \times 10 \times 10}_{\color{black}3\,\text{steps}}.

Therefore, we move 3 steps left in the place value chart:

ten-thousands thousands hundreds tens ones
\color{blue}6 \color{red}6

Therefore, the required number is any number with the digit 6 in the ten-thousands place. For example, \bbox[2px,lightgray]{\color{blue}6}5,291.

FLAG

What is missing in the following sentence?

The digit $7$ in $731$ is $\underline{\phantom{{}^{000000000000000000000000000}}}$ than the value of the digit $7$ in $527.$

a
$1,000$ times larger
b
$10$ larger
c
$100$ larger
d
$10$ times larger
e
$100$ times larger

In which of the following numbers does the digit $6$ have a value that is $100$ times larger than the value of the digit $6$ in $8,162?$

a
$6,423$
b
$7,216$
c
$9,603$
d
$2,368$
e
$1,675$

How many times greater is the value of the digit $6$ in $6,137$ than the value of the digit $6$ in $3,596?$

a
$10$
b
$100$
c
$1,000$
d
$600$
e
$6$

Find a number in which the digit 1 has a value that is 1,000 times larger than the value of the digit 1 in 647,198.

EXPLANATION

Whenever you move a digit one space to the left in a place value chart, the value of the digit becomes ten times larger.

Let's start by writing down the place value chart for 647,198.

hundred-thousands ten-thousands thousands hundreds tens ones
\color{lightgray}6 \color{lightgray}4 \color{lightgray}7 \color{red}1 \color{lightgray}9 \color{lightgray}8

We need to find a number in which the digit \color{blue}1 has a value that is 1,000 times larger than that of hundreds.

Notice that

1,000 = \underbrace{10 \times 10\times 10}_{\color{black}3\,\text{steps}}.

Therefore, we move 3 steps left in the place value chart:

hundred-thousands ten-thousands thousands hundreds tens ones
\color{blue}1 \color{red}1

Therefore, the required number is any number that has the digit 1 in the hundred-thousands place. For example, \bbox[2px,lightgray]{\color{blue}1}05,978.

FLAG

How many times greater is the value of the digit $4$ in $345,738$ than the value of the digit $4$ in $2,743?$

a
$100$
b
$1,000$
c
$10$
d
$4,000$
e
$400$

In which of the following numbers does the digit $9$ have a value that is $1,000$ times larger than the value of the digit $9$ in $813,906?$

a
$719,113$
b
$967,421$
c
$537,294$
d
$298,201$
e
$287,319$

What is missing in the following sentence?

The digit $2$ in $2,146,705$ is $\underline{\phantom{{}^{000000000000000000000000000}}}$ than the value of the digit $2$ in $92,165.$

a
$10$ times larger
b
$1,000$ times larger
c
$100$ times larger
d
$1,000$ larger
e
$100$ larger
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