This printable worksheet helps students master place value concepts by identifying the value of underlined digits in various numbers.

Problem Explanation:

The worksheet is divided into two sections:
1. Place Value of Underlined Digits: Determine the place value (e.g., ones, tens, hundreds, etc.) of the underlined digit in each number.
2. Digit Value of Underlined Digits: Determine the actual numerical value contributed by the underlined digit based on its place value.

Let's solve each part step by step.

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Part 1: Place Value of Underlined Digits

#### a. \( 27,90\mathbf{1} \)
- The underlined digit is 1.
- Its place value is ones.

#### b. \( 10\mathbf{1} \)
- The underlined digit is 1.
- Its place value is ones.

#### c. \( 81\mathbf{0} \)
- The underlined digit is 0.
- Its place value is tens.

#### d. \( 1,5\mathbf{2}3 \)
- The underlined digit is 2.
- Its place value is tens.

#### e. \( 20\mathbf{2} \)
- The underlined digit is 2.
- Its place value is ones.

#### f. \( 6\mathbf{9}0 \)
- The underlined digit is 9.
- Its place value is tens.

#### g. \( \mathbf{5},111 \)
- The underlined digit is 5.
- Its place value is thousands.

#### h. \( 1,980,45\mathbf{6} \)
- The underlined digit is 6.
- Its place value is ones.

#### i. \( 22,05\mathbf{4} \)
- The underlined digit is 4.
- Its place value is tens.

#### j. \( 102,75\mathbf{2} \)
- The underlined digit is 2.
- Its place value is tens.

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Part 2: Digit Value of Underlined Digits

#### a. \( 6\mathbf{8},987 \)
- The underlined digit is 8.
- Its place value is ten thousands.
- Digit value = \( 8 \times 10,000 = 80,000 \).

#### b. \( 7,\mathbf{2}01 \)
- The underlined digit is 2.
- Its place value is hundreds.
- Digit value = \( 2 \times 100 = 200 \).

#### c. \( 9\mathbf{1}6 \)
- The underlined digit is 1.
- Its place value is tens.
- Digit value = \( 1 \times 10 = 10 \).

#### d. \( 5\mathbf{8}2 \)
- The underlined digit is 8.
- Its place value is tens.
- Digit value = \( 8 \times 10 = 80 \).

#### e. \( 4\mathbf{6}3 \)
- The underlined digit is 6.
- Its place value is tens.
- Digit value = \( 6 \times 10 = 60 \).

#### f. \( 8\mathbf{9}4 \)
- The underlined digit is 9.
- Its place value is tens.
- Digit value = \( 9 \times 10 = 90 \).

#### g. \( \mathbf{7},184 \)
- The underlined digit is 7.
- Its place value is thousands.
- Digit value = \( 7 \times 1,000 = 7,000 \).

#### h. \( 4,1\mathbf{3}0,475 \)
- The underlined digit is 3.
- Its place value is hundred thousands.
- Digit value = \( 3 \times 100,000 = 300,000 \).

#### i. \( \mathbf{1},2,356 \)
- The underlined digit is 1.
- Its place value is millions.
- Digit value = \( 1 \times 1,000,000 = 1,000,000 \).

#### j. \( 6\mathbf{3}0,326 \)
- The underlined digit is 3.
- Its place value is ten thousands.
- Digit value = \( 3 \times 10,000 = 30,000 \).

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Final Answers:

#### Part 1: Place Value
a. ones
b. ones
c. tens
d. tens
e. ones
f. tens
g. thousands
h. ones
i. tens
j. tens

#### Part 2: Digit Value
a. 80,000
b. 200
c. 10
d. 80
e. 60
f. 90
g. 7,000
h. 300,000
i. 1,000,000
j. 30,000

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Boxed Final Answer:

\[
\boxed{
\begin{array}{ll}
\text{Part 1: Place Value} & \\
\text{a. ones} & \text{b. ones} \\
\text{c. tens} & \text{d. tens} \\
\text{e. ones} & \text{f. tens} \\
\text{g. thousands} & \text{h. ones} \\
\text{i. tens} & \text{j. tens} \\
\\
\text{Part 2: Digit Value} & \\
\text{a. 80,000} & \text{b. 200} \\
\text{c. 10} & \text{d. 80} \\
\text{e. 60} & \text{f. 90} \\
\text{g. 7,000} & \text{h. 300,000} \\
\text{i. 1,000,000} & \text{j. 30,000} \\
\end{array}
}
\]