Examining Digit Place Values Answer Key

Complete answer key for place value exercises: ones, tens, hundreds, and thousands with detailed solutions and verification.

Answer Key: Examining Digit Place Values
1 Ones place examination
Question 1
In the number 4,287, what is the value of the digit in the ones place? What does this digit represent?
Definition:

Ones Place: The rightmost position in a number. Each digit here represents that many ones.

Ones place identification method:
  1. Look at the rightmost digit in the number
  2. Identify its value (same as the digit itself)
  3. Understand that this digit represents that many ones
Number
4,287
Ones digit
7
Value
7 ones
Step 1: Identify the ones place

The ones place is the rightmost position in any number

Step 2: Locate the digit in the ones place

In 4,287, the rightmost digit is 7

Step 3: Determine the value

The digit 7 in the ones place has a value of 7 × 1 = 7

Step 4: Understand the representation

The digit 7 represents seven ones (or seven units)

Step 5: State the answer

The value of the digit in the ones place is 7

The digit in the ones place is 7, representing 7 ones
Answer Key:

Correct Answer: In the number 4,287, the digit in the ones place is 7, and it represents 7 ones.

Verification: 7 × 1 = 7 ✓

Applied rules:

• Ones Place: Always the rightmost digit

• Value Calculation: Digit × 1

• Representation: Shows how many ones in the number

2 Tens place examination
Question 2
In the number 5,392, what is the value of the digit in the tens place? How many tens does this represent?
Definition:

Tens Place: The second position from the right. Each digit here represents that many tens (or groups of ten).

Number
5,392
Tens digit
9
Value
90
Step 1: Identify the tens place

The tens place is the second position from the right

Step 2: Locate the digit in the tens place

In 5,392, the second digit from the right is 9

Step 3: Calculate the value

The digit 9 in the tens place has a value of 9 × 10 = 90

Step 4: Understand the representation

The digit 9 represents nine tens, which is 90

Step 5: State the answer

The value of the digit in the tens place is 90

The digit in the tens place is 9, representing 90 (nine tens)
Answer Key:

Correct Answer: In the number 5,392, the digit in the tens place is 9, and it represents 90 (nine tens).

Verification: 9 × 10 = 90 ✓

Applied rules:

• Tens Place: Second position from the right

• Value Calculation: Digit × 10

• Representation: Shows how many tens in the number

3 Hundreds place examination
Question 3
In the number 8,463, what is the value of the digit in the hundreds place? How many hundreds does this represent?
Definition:

Hundreds Place: The third position from the right. Each digit here represents that many hundreds (or groups of one hundred).

Number
8,463
Hundreds digit
4
Value
400
Step 1: Identify the hundreds place

The hundreds place is the third position from the right

Step 2: Locate the digit in the hundreds place

In 8,463, the third digit from the right is 4

Step 3: Calculate the value

The digit 4 in the hundreds place has a value of 4 × 100 = 400

Step 4: Understand the representation

The digit 4 represents four hundreds, which is 400

Step 5: State the answer

The value of the digit in the hundreds place is 400

The digit in the hundreds place is 4, representing 400 (four hundreds)
Answer Key:

Correct Answer: In the number 8,463, the digit in the hundreds place is 4, and it represents 400 (four hundreds).

Verification: 4 × 100 = 400 ✓

Applied rules:

• Hundreds Place: Third position from the right

• Value Calculation: Digit × 100

• Representation: Shows how many hundreds in the number

Answer Verification & Common Mistakes
Place\ Value = digit \times place\ multiplier
Verification Formula
Ones
\(digit \times 1\)
Rightmost position
Tens
\(digit \times 10\)
Second from right
Hundreds
\(digit \times 100\)
Third from right
Thousands
\(digit \times 1000\)
Fourth from right
Key definitions:

Place Value: The value of a digit based on its position in a number

Ones Place: The rightmost position, each digit represents that many ones

Tens Place: The second position from the right, each digit represents that many tens

Hundreds Place: The third position from the right, each digit represents that many hundreds

Thousands Place: The fourth position from the right, each digit represents that many thousands

Answer verification method:
  1. Re-identify positions: Count positions from right to left
  2. Confirm digit location: Verify the digit in the specified place
  3. Recalculate value: Multiply digit by correct place value
  4. Check representation: Ensure the answer states what the digit represents
Tip 1: Always count positions from the right: ones, tens, hundreds, thousands.
Tip 2: Each place value is 10 times greater than the place to its right.
Tip 3: The actual value of a digit = digit × place value multiplier.
Tip 4: Use commas to separate thousands for easier reading of large numbers.
Common errors: Confusing place names, forgetting to multiply by place value, miscounting positions from the right.
Verification steps: Re-identify position, re-calculate value, check representation.
Verification checklist:

• Ones Place: Position 1 from right, value = digit × 1

• Tens Place: Position 2 from right, value = digit × 10

• Hundreds Place: Position 3 from right, value = digit × 100

• Thousands Place: Position 4 from right, value = digit × 1000

• Position Counting: Always count from right to left

• Verification: Multiply digit by place value to confirm answer

Complex Place Value Answer Key
4 Multiple place examination
Question 4
In the number 7,549, identify and state the value of each digit in its respective place. Express the number in expanded form.
Definition:

Expanded Form: Writing a number as the sum of the values of each digit in its place.

Number
7,549
Expanded
7000+500+40+9
Word form
Seven thousand five hundred forty-nine
Step 1: Identify each digit and its place

Thousand's place: 7, Hundred's place: 5, Ten's place: 4, One's place: 9

Step 2: Calculate each digit's value

7 in thousands place: 7 × 1000 = 7000

5 in hundreds place: 5 × 100 = 500

4 in tens place: 4 × 10 = 40

9 in ones place: 9 × 1 = 9

Step 3: Write in expanded form

7,549 = 7000 + 500 + 40 + 9

Step 4: Verify the calculation

7000 + 500 + 40 + 9 = 7,549 ✓

Step 5: State the answer

Each digit's value: 7000, 500, 40, 9

7,549 = 7000 + 500 + 40 + 9
Answer Key:

Correct Answer: In the number 7,549: 7 represents 7000, 5 represents 500, 4 represents 40, and 9 represents 9. Expanded form: 7,549 = 7000 + 500 + 40 + 9.

Verification: 7000 + 500 + 40 + 9 = 7,549 ✓

Applied rules:

• Place Value Identification: Each position has a specific value

• Expanded Form: Sum of each digit's place value

• Verification: Check that expanded form equals original number

5 Place value comparison
Question 5
Compare the value of the digit 3 in the numbers 3,456 and 4,321. How many times greater is the value of 3 in the first number compared to the second?
Definition:

Place Value Comparison: Determining how the same digit has different values based on its position in different numbers.

First number
3,456 → 3 in thousands = 3000
Second number
4,321 → 3 in hundreds = 300
Comparison
3000 ÷ 300 = 10
Step 1: Find the value of 3 in 3,456

In 3,456, the digit 3 is in the thousands place

Value = 3 × 1000 = 3000

Step 2: Find the value of 3 in 4,321

In 4,321, the digit 3 is in the hundreds place

Value = 3 × 100 = 300

Step 3: Calculate how many times greater

Ratio = Value in first number ÷ Value in second number

Ratio = 3000 ÷ 300 = 10

Step 4: Interpret the result

The value of 3 in 3,456 is 10 times greater than the value of 3 in 4,321

Step 5: State the answer

The value of 3 in the first number is 10 times greater

The 3 in 3,456 is 10 times greater than the 3 in 4,321
Answer Key:

Correct Answer: In 3,456, the digit 3 has a value of 3000. In 4,321, the digit 3 has a value of 300. The value of 3 in the first number is 10 times greater than in the second number.

Verification: 3000 ÷ 300 = 10 ✓

Applied rules:

• Position Matters: Same digit has different values in different positions

• Comparison: Divide larger value by smaller to find ratio

• Place Value System: Each position is 10 times the previous

Complete Answer Key Summary
Place\ Value = digit \times place\ multiplier
Verification Formula
Key definitions:

Place Value: The value of a digit based on its position in a number

Ones Place: The rightmost position in a number, each digit represents that many ones

Tens Place: The second position from the right, each digit represents that many tens

Hundreds Place: The third position from the right, each digit represents that many hundreds

Thousands Place: The fourth position from the right, each digit represents that many thousands

Answer verification methodology:
  1. Position Identification: Count positions from right to left (ones, tens, hundreds, thousands)
  2. Digit Location: Find the digit in the specified place
  3. Value Calculation: Multiply the digit by the place value multiplier
  4. Representation Understanding: Know what the digit represents
  5. Verification: Check your work by confirming the expanded form
  6. Verification: Multiply digit by place value to confirm answer
Tip 1: Remember the order: Ones, Tens, Hundreds, Thousands (from right to left).
Tip 2: Each place value is 10 times greater than the place to its right.
Tip 3: Use commas to separate thousands for easier reading of large numbers.
Tip 4: Practice with expanded form to strengthen understanding of place values.
Common errors: Confusing place names, forgetting to multiply by place value, miscounting positions from the right, not understanding the base-ten system.
Verification steps: Re-identify position, re-calculate value, check representation.
Essential verification rules:

• Ones Place: Position 1 from right, value = digit × 1

• Tens Place: Position 2 from right, value = digit × 10

• Hundreds Place: Position 3 from right, value = digit × 100

• Thousands Place: Position 4 from right, value = digit × 1000

• Position Counting: Always count from right to left

• Base-Ten System: Each position is 10 times the previous position

• Verification: Multiply digit by place value to confirm answer

Place Value Applications in Daily Life
Place Value Uses
Place value calculations in real life:
Money: dollars and cents
Measurements: meters, kilometers
Large numbers: population counts

Applications: Understanding place value is essential for many practical tasks.

  • Money: Understanding dollars and cents (ones and tenths)
  • Measurements: Reading meters, kilometers, liters
  • Large numbers: Population counts, distances, quantities
  • Calculations: Addition, subtraction, multiplication, division

Questions & Answers

Question: How can I check if my place value answers are correct?

Answer: Here are several ways to verify your place value answers:

  • Re-count positions: Double-check that you identified the correct place
  • Re-calculate: Multiply the digit by the correct place value multiplier
  • Use expanded form: Add up all place values to see if they equal the original number
  • Compare with answer key: Check your work against provided solutions

Example: For 4,523, verify by checking: 4000 + 500 + 20 + 3 = 4,523 ✓

Always take time to verify your answers before moving on!

Question: How can I help my child check their place value work using this answer key?

Answer: Here's how to use this answer key effectively:

  1. Have your child attempt the problem first without looking at the answer key
  2. Go through the step-by-step solutions together after they finish
  3. Compare their method with ours - different approaches might both be correct
  4. Check each step individually to identify where errors occur
  5. Practice verification techniques using the methods in our answer key

Encourage your child to explain their reasoning as they work through problems. This helps identify misunderstandings early!

Question: What should I do if my answer doesn't match the answer key?

Answer: If your answer doesn't match the answer key, don't worry! This is normal and part of learning. Here's what to do:

  1. Stay calm - mistakes help you learn
  2. Go through the problem again step by step
  3. Compare your work with the answer key's step-by-step solution
  4. Look for the mistake - was it counting positions, multiplying, or identifying the digit?
  5. Try again with the correction
  6. Ask for help if you still can't find the error

Remember: Learning from mistakes is how you get better at math! Every mathematician makes errors - the key is learning from them.