Expanded form: Writing a number to show the value of each digit. For example, 3,456 = 3,000 + 400 + 50 + 6 (three thousands, four hundreds, five tens, six ones).
- Identify the thousands digit and multiply by 1,000
- Identify the hundreds digit and multiply by 100
- Identify the tens digit and multiply by 10
- Identify the ones digit and multiply by 1
- Add all values together
2 in thousands place = 2 × 1,000 = 2,000
3 in hundreds place = 3 × 100 = 300
4 in tens place = 4 × 10 = 40
5 in ones place = 5 × 1 = 5
2,000 + 300 + 40 + 5 = 2,345
Try these: 4,567 = ___ + ___ + ___ + ___, 3,891 = ___ + ___ + ___ + ___, 7,205 = ___ + ___ + ___ + ___
• Thousands place: Multiply by 1,000
• Hundreds place: Multiply by 100
• Tens place: Multiply by 10
• Ones place: Multiply by 1
• Check your work: Add to make sure it equals the original number
Find the partner: Each 4-digit number has an expanded form that equals the same amount.
5 in thousands place = 5,000
6 in hundreds place = 600
7 in tens place = 70
8 in ones place = 8
5,678 = 5,000 + 600 + 70 + 8
5,000 + 600 + 70 + 8 = 5,678 ✓
Match: 2,468 with 2,000 + 400 + 60 + 8, 7,351 with 7,000 + 300 + 50 + 1, 9,804 with 9,000 + 800 + 0 + 4
• Look at each digit: Determine its place value
• Don't forget zeros: If a place has 0, include 0 in expanded form
• Check your match: Make sure they add up to the original number
Complete the equation: Use your knowledge of place value to find the missing parts.
We know: 4,000 (thousands), 80 (tens), 7 (ones)
The hundreds place is missing
Looking at 4,287, the hundreds digit is 2
2 × 100 = 200
4,287 = 4,000 + 200 + 80 + 7
5,392 = 5,000 + ___ + 90 + 2, 8,406 = 8,000 + 400 + ___ + 6, 1,750 = 1,000 + 700 + 50 + ___
• Identify known parts: Look for what's given in the equation
• Find the missing place: Which place value is not filled?
• Use place value: Remember each digit's position
• Verify your answer: Always check by adding
Expanded Form: Writing a number to show what each digit is worth (like 4,567 = 4,000 + 500 + 60 + 7)
Thousands Place: The first digit represents groups of 1,000 (4,000, 5,000, 6,000...)
Hundreds Place: The second digit represents groups of 100 (400, 500, 600...)
Tens Place: The third digit represents groups of 10 (40, 50, 60...)
Ones Place: The fourth digit represents single units (1, 2, 3...)
Place Value: Where a digit sits tells us its value
- Look at the number: 8,372
- Identify thousands digit: 8 (in thousands place)
- Calculate thousands value: 8 × 1,000 = 8,000
- Identify hundreds digit: 3 (in hundreds place)
- Calculate hundreds value: 3 × 100 = 300
- Identify tens digit: 7 (in tens place)
- Calculate tens value: 7 × 10 = 70
- Identify ones digit: 2 (in ones place)
- Calculate ones value: 2 × 1 = 2
- Write expanded form: 8,000 + 300 + 70 + 2 = 8,372
- Check: Does 8,000 + 300 + 70 + 2 = 8,372?
• Thousands Rule: First digit × 1,000 (3 in 3,456 = 3,000)
• Hundreds Rule: Second digit × 100 (4 in 3,456 = 400)
• Tens Rule: Third digit × 10 (5 in 3,456 = 50)
• Ones Rule: Fourth digit × 1 (6 in 3,456 = 6)
• Verification: Always add parts to confirm original number
• Zero Handling: Include zeros in expanded form as needed
Work with zeros: Learn how to handle zeros in different place values in expanded form.
5 in thousands place = 5,000
0 in hundreds place = 0
4 in tens place = 40
3 in ones place = 3
5,043 = 5,000 + 0 + 40 + 3
5,043 = 5,000 + 40 + 3
Represent and write: 3,070, 8,005, 4,500, 6,080
• Include zeros: Zeros still hold place value
• Simplify option: Zero terms can be omitted
• Verify carefully: Double-check calculations
Solve the puzzle: Use expanded form clues to find the mystery 4-digit numbers.
"I have 6 thousands" = 6,000
"I have 0 hundreds" = 0
"I have 4 tens" = 40
"I have 7 ones" = 7
6,000 + 0 + 40 + 7 = 6,047
6,047 = 6,000 + 0 + 40 + 7
Find: 3 thousands + 5 hundreds + 0 tens + 8 ones = ?, 7 thousands + 0 hundreds + 2 tens + 0 ones = ?
• Decode clues systematically: Thousands → Hundreds → Tens → Ones
• Handle zeros properly: They still contribute to the number
• Combine clues carefully: Add all parts to get the final number
Expanded Form: Writing 4-digit numbers to show the value of each digit (thousands, hundreds, tens, ones)
Thousands Place: The first digit represents groups of 1,000
Hundreds Place: The second digit represents groups of 100
Tens Place: The third digit represents groups of 10
Ones Place: The fourth digit represents single units
Verification: Always add expanded parts to confirm the original number
- Look at the number: 7,634
- Identify thousands digit: 7 (in thousands place)
- Calculate thousands value: 7 × 1,000 = 7,000
- Identify hundreds digit: 6 (in hundreds place)
- Calculate hundreds value: 6 × 100 = 600
- Identify tens digit: 3 (in tens place)
- Calculate tens value: 3 × 10 = 30
- Identify ones digit: 4 (in ones place)
- Calculate ones value: 4 × 1 = 4
- Write expanded form: 7,634 = 7,000 + 600 + 30 + 4
- Check: 7,000 + 600 + 30 + 4 = 7,634 ✓
• 2,345 = 2,000 + 300 + 40 + 5 • 4,567 = 4,000 + 500 + 60 + 7 • 6,789 = 6,000 + 700 + 80 + 9
• 8,901 = 8,000 + 900 + 0 + 1 • 3,045 = 3,000 + 0 + 40 + 5 • 7,800 = 7,000 + 800 + 0 + 0
• 1,023 = 1,000 + 0 + 20 + 3 • 5,607 = 5,000 + 600 + 0 + 7 • 9,008 = 9,000 + 0 + 0 + 8
1,234 = 1,000 + 200 + 30 + 4
2,345 = 2,000 + 300 + 40 + 5
3,456 = 3,000 + 400 + 50 + 6
Patterns: Notice the consistent structure in expanded form!
- Each digit multiplies by its place value
- Thousands digit × 1,000
- Hundreds digit × 100
- Tens digit × 10
- Ones digit × 1