Three-digit numbers: Numbers from 100 to 999 have hundreds, tens, and ones place values.
- Read the hundreds digit followed by "hundred"
- Read the remaining two digits as before (tens and ones)
- Use hyphens for compound numbers (21-99)
For 123: 1 is in hundreds place, so "one hundred"
23 = "twenty-three" (with hyphen)
123 = "one hundred twenty-three"
123 = one hundred twenty-three
• Hundred connector: Add "hundred" after hundreds digit
• Hyphenation: Use hyphens in compound numbers (21-99)
• Remainder: Read tens and ones as before
Zero placeholders: Zeros in the tens or ones place affect how we read three-digit numbers.
For 105: 1 = "one hundred"
0 in tens place means skip tens, go directly to ones
5 = "five", so 105 = "one hundred five"
Zeros in tens place mean we skip saying tens
• Zero in tens: Skip the tens part when it's zero
• Round hundreds: Numbers like 300 only say hundreds
• Continue with ones: When tens is zero, continue with ones
Mixed zero patterns: Numbers with zeros in various positions requiring careful reading.
For 560: 5 = "five hundred"
0 in ones place means skip ones, tens part remains
6 = "sixty", so 560 = "five hundred sixty"
Each number requires careful attention to zero placement
Read each digit carefully considering zero positions
• Zero handling: Skip zeros in middle positions
• Position awareness: Know which digit is in which place
• Pattern recognition: Identify common zero patterns
Place value: The value of a digit based on its position in a number
Standard form: The usual way we write numbers (like 123)
Word form: Writing numbers using words (like one hundred twenty-three)
Base 10 system: Our number system where each position is 10 times the previous position
- Identify place values: From right to left (ones, tens, hundreds)
- Read hundreds digit: Say the digit followed by "hundred"
- Read remaining digits: Apply rules for 1-99 to the tens and ones
- Handle zeros: Skip zeros in middle positions
- Combine: Join all parts with proper connectors
• Three-digit formula: ABC = A hundred BC
• Place value: Each position is 10 times the one to its right
• Hyphenation: Use hyphens in compound numbers 21-99
• Base 10 relationship: 10 ones = 1 ten, 10 tens = 1 hundred
Four-digit numbers: Numbers from 1,000 to 9,999 have thousands, hundreds, tens, and ones place values.
For 1,234: 1 is in thousands place, so "one thousand"
234 = "two hundred thirty-four"
1,234 = "one thousand two hundred thirty-four"
Four-digit numbers use "thousand" separator
• Thousand connector: Add "thousand" after thousands digit
• Remainder: Read last three digits as before
• Hyphenation: Still apply hyphens to compound numbers
Numbers with zeros in thousands period: Complex patterns with zeros in various positions.
For 1,005: 1 = "one thousand"
0 in hundreds and tens means skip those parts
For 1,005: only 5 remains = "five"
1,005 = "one thousand five"
Complex numbers require careful attention to zero periods
• Zero skipping: Completely skip zero periods
• Partial zeros: Read non-zero parts only
• Accuracy: Each digit must be in correct position
Place value: The value of a digit based on its position in a number
Standard form: The usual way we write numbers (like 123)
Word form: Writing numbers using words (like one hundred twenty-three)
Base 10 system: Our number system where each position is 10 times the previous position
- Identify place values: From right to left (ones, tens, hundreds)
- Read hundreds digit: Say the digit followed by "hundred"
- Read remaining digits: Apply rules for 1-99 to the tens and ones
- Handle zeros: Skip zeros in middle positions
- Combine: Join all parts with proper connectors
• Three-digit formula: ABC = A hundred BC
• Place value: Each position is 10 times the one to its right
• Hyphenation: Use hyphens in compound numbers 21-99
• Base 10 relationship: 10 ones = 1 ten, 10 tens = 1 hundred
1-9: one, two, three... nine
10-99: ten, eleven, twelve... ninety-nine
100-999: one hundred, two hundred... nine hundred
1,000-9,999: one thousand, two thousand... nine thousand
Reading Patterns:
- 1-9: Single digit names
- 10-99: Teen numbers and compound numbers
- 100-999: Hundreds + remainder
- 1,000-9,999: Thousands + remainder