Math worksheet for practicing place value by identifying the value of underlined digits and selecting the correct digit for a given value.

Problem Analysis:

The task involves two parts:
1. Writing the value of the underlined digits in given numbers.
2. Underlining the correct digit in each number based on its given value.

Let's solve each part step by step.

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Part 1: Writing the value of the underlined digits

We need to identify the place value of each underlined digit and write its corresponding value.

#### Row 1:
- 5,448: The underlined digit is 5, which is in the thousands place.
Value = \( 5 \times 1000 = 5000 \).
- 7,980: The underlined digit is 7, which is in the thousands place.
Value = \( 7 \times 1000 = 7000 \).
- 4,980: The underlined digit is 9, which is in the hundreds place.
Value = \( 9 \times 100 = 900 \).

#### Row 2:
- 6,246: The underlined digit is 2, which is in the hundreds place.
Value = \( 2 \times 100 = 200 \).
- 6,664: The underlined digit is 6, which is in the thousands place.
Value = \( 6 \times 1000 = 6000 \).
- 7,312: The underlined digit is 7, which is in the thousands place.
Value = \( 7 \times 1000 = 7000 \).

#### Row 3:
- 3,153: The underlined digit is 1, which is in the hundreds place.
Value = \( 1 \times 100 = 100 \).
- 5,873: The underlined digit is 5, which is in the thousands place.
Value = \( 5 \times 1000 = 5000 \).
- 5,468: The underlined digit is 4, which is in the hundreds place.
Value = \( 4 \times 100 = 400 \).

#### Row 4:
- 4,098: The underlined digit is 9, which is in the tens place.
Value = \( 9 \times 10 = 90 \).
- 4,125: The underlined digit is 2, which is in the tens place.
Value = \( 2 \times 10 = 20 \).
- 1,019: The underlined digit is 1, which is in the tens place.
Value = \( 1 \times 10 = 10 \).

#### Row 5:
- 1,222: The underlined digit is 1, which is in the thousands place.
Value = \( 1 \times 1000 = 1000 \).
- 9,099: The underlined digit is 9, which is in the thousands place.
Value = \( 9 \times 1000 = 9000 \).
- 3,047: The underlined digit is 3, which is in the thousands place.
Value = \( 3 \times 1000 = 3000 \).

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Part 2: Underlining the correct digit in each number given its value

We need to identify the digit in each number that corresponds to the given value and underline it.

#### Row 1:
- 2,091 (2,000): The value \( 2,000 \) corresponds to the digit 2 in the thousands place.
Underline: 2,091.
- 6,115 (5): The value \( 5 \) corresponds to the digit 5 in the ones place.
Underline: 6,115.
- 2,770 (2,000): The value \( 2,000 \) corresponds to the digit 2 in the thousands place.
Underline: 2,770.

#### Row 2:
- 6,883 (800): The value \( 800 \) corresponds to the digit 8 in the hundreds place.
Underline: 6,883.
- 3,347 (3,000): The value \( 3,000 \) corresponds to the digit 3 in the thousands place.
Underline: 3,347.
- 5,100 (100): The value \( 100 \) corresponds to the digit 1 in the hundreds place.
Underline: 5,100.

#### Row 3:
- 1,335 (30): The value \( 30 \) corresponds to the digit 3 in the tens place.
Underline: 1,335.
- 2,334 (30): The value \( 30 \) corresponds to the digit 3 in the tens place.
Underline: 2,334.
- 7,148 (7,000): The value \( 7,000 \) corresponds to the digit 7 in the thousands place.
Underline: 7,148.

#### Row 4:
- 8,125 (5): The value \( 5 \) corresponds to the digit 5 in the ones place.
Underline: 8,125.
- 1,669 (600): The value \( 600 \) corresponds to the digit 6 in the hundreds place.
Underline: 1,669.
- 1,099 (0): The value \( 0 \) corresponds to the digit 0 in the hundreds place.
Underline: 1,099.

#### Row 5:
- 7,908 (7,000): The value \( 7,000 \) corresponds to the digit 7 in the thousands place.
Underline: 7,908.
- 9,982 (9,000): The value \( 9,000 \) corresponds to the digit 9 in the thousands place.
Underline: 9,982.
- 3,124 (20): The value \( 20 \) corresponds to the digit 2 in the tens place.
Underline: 3,124.

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Final Answer:

#### Part 1: Values of underlined digits
\[
\begin{array}{ccc}
5,448 & 7,980 & 4,980 \\
\text{Value: } 5000 & \text{Value: } 7000 & \text{Value: } 900 \\
6,246 & 6,664 & 7,312 \\
\text{Value: } 200 & \text{Value: } 6000 & \text{Value: } 7000 \\
3,153 & 5,873 & 5,468 \\
\text{Value: } 100 & \text{Value: } 5000 & \text{Value: } 400 \\
4,098 & 4,125 & 1,019 \\
\text{Value: } 90 & \text{Value: } 20 & \text{Value: } 10 \\
1,222 & 9,099 & 3,047 \\
\text{Value: } 1000 & \text{Value: } 9000 & \text{Value: } 3000 \\
\end{array}
\]

#### Part 2: Underlining the correct digits
\[
\begin{array}{ccc}
2,091 & 6,115 & 2,770 \\
\text{Underline: } \mathbf{2},091 & \text{Underline: } 6,11\mathbf{5} & \text{Underline: } \mathbf{2},770 \\
6,883 & 3,347 & 5,100 \\
\text{Underline: } 6,\mathbf{8}83 & \text{Underline: } \mathbf{3},347 & \text{Underline: } 5,\mathbf{1}00 \\
1,335 & 2,334 & 7,148 \\
\text{Underline: } 1,3\mathbf{3}5 & \text{Underline: } 2,3\mathbf{3}4 & \text{Underline: } \mathbf{7},148 \\
8,125 & 1,669 & 1,099 \\
\text{Underline: } 8,12\mathbf{5} & \text{Underline: } 1,\mathbf{6}69 & \text{Underline: } 1,\mathbf{0}99 \\
7,908 & 9,982 & 3,124 \\
\text{Underline: } \mathbf{7},908 & \text{Underline: } \mathbf{9},982 & \text{Underline: } 3,1\mathbf{2}4 \\
\end{array}
\]

\boxed{
\begin{array}{ccc}
5000 & 7000 & 900 \\
200 & 6000 & 7000 \\
100 & 5000 & 400 \\
90 & 20 & 10 \\
1000 & 9000 & 3000 \\
\end{array}
}
\]