Four-digit numbers: Numbers from 1,000 to 9,999 have thousands, hundreds, tens, and ones place values.
- Read the thousands digit followed by "thousand"
- Read the remaining three digits as before (hundreds, tens, ones)
- Use commas to separate periods for clarity
For 2,345: 2 is in thousands place, so "two thousand"
345 = "three hundred forty-five"
2,345 = "two thousand three hundred forty-five"
Numbers 1,000-9,999 read with "thousand" separator
• Thousand separator: Say thousands digit + "thousand"
• Remainder: Read remaining digits as before
• Commas: Help identify thousands period
Zero placeholders in thousands: Zeros in the hundreds, tens, or ones place of the thousands period affect how we read them.
For 1,005: 1 = "one thousand"
0 in hundreds and tens means skip those parts
For 1,005: only 5 remains = "five"
Zeros in middle positions are skipped when reading
• Zero skipping: Skip zeros in middle positions
• Continuation: Jump to non-zero digits
• Round thousands: Numbers like 3,000 only say thousands
Five-digit numbers: Numbers from 10,000 to 99,999 have ten-thousands, thousands, hundreds, tens, and ones place values.
For 23,456: 23 = "twenty-three"
"twenty-three thousand"
456 = "four hundred fifty-six"
23,456 = "twenty-three thousand four hundred fifty-six"
Five-digit numbers combine tens/ones with thousands
• Two-digit thousands: Read first two digits as compound number
• Thousand separator: Add "thousand" after first two digits
• Remainder: Read last three digits as before
Place value: The value of a digit based on its position in a number
Periods: Groups of three digits separated by commas (ones, thousands, millions)
Standard form: The usual way we write numbers (like 1,234,567)
Word form: Writing numbers using words (like one million two hundred thirty-four thousand five hundred sixty-seven)
- Identify periods: Separate number into millions, thousands, ones
- Read millions period: Read digits as hundreds/tens/ones + "million"
- Read thousands period: Read digits as before + "thousand"
- Read ones period: Read final three digits
- Combine: Join all parts with proper separators
• Seven-digit formula: ABC,DEF,GHI = A million BCD thousand EFG
• Period naming: Millions, thousands, ones
• Place value: Each position is 10 times the one to its right
• Base 10 relationship: 10 hundred-thousands = 1 million
Round millions: Numbers where the millions period has non-zero digits but thousands and ones periods may be zero.
For 1,000,000: 1 = "one"
"one million"
If thousands and ones are all zeros, stop here
Round millions only require reading the millions digit
• Round millions: Only read non-zero periods
• Zero skipping: Skip zero periods completely
• Simplicity: Round millions are simpler to read
Full seven-digit reading: Combining millions, thousands, and ones periods properly.
For 1,234,567: 1 = "one million"
234 = "two hundred thirty-four thousand"
567 = "five hundred sixty-seven"
1,234,567 = "one million two hundred thirty-four thousand five hundred sixty-seven"
Reading millions combines all three periods
• Period separation: Read each period independently
• Proper connectors: Use "million" and "thousand" appropriately
• Sequence: Always read from left to right (highest to lowest period)
Place value: The value of a digit based on its position in a number
Periods: Groups of three digits separated by commas (ones, thousands, millions)
Standard form: The usual way we write numbers (like 1,234,567)
Word form: Writing numbers using words (like one million two hundred thirty-four thousand five hundred sixty-seven)
- Identify periods: Separate number into millions, thousands, ones
- Read millions period: Read digits as hundreds/tens/ones + "million"
- Read thousands period: Read digits as before + "thousand"
- Read ones period: Read final three digits
- Combine: Join all parts with proper separators
• Seven-digit formula: ABC,DEF,GHI = A million BCD thousand EFG
• Period naming: Millions, thousands, ones
• Place value: Each position is 10 times the one to its right
• Base 10 relationship: 10 hundred-thousands = 1 million
1-999: one, two...nine hundred ninety-nine
1,000-999,999: one thousand...nine hundred ninety-nine thousand
1,000,000-9,999,999: one million...nine million
Reading Patterns:
- 1-999: Standard hundreds/tens/ones
- 1,000-999,999: Add "thousand" separator
- 1,000,000-9,999,999: Add "million" separator