Skip to content
Mathematics

Number Representation & Place Value

29 lessons · topologically ordered (prerequisites first).

  1. 1
    Reading and writing numbers to 20
    Ages 5–6 · high
  2. 3
    Negative Numbers
    Ages 8–9 · high
  3. 5
    Odd or Even
    Ages 7–8 · low
  4. 6
    The teen numbers
    Ages 5–7 · high
    • Reading and writing numbers to 20 (hard)
  5. 7
    Number Words to Twenty
    Ages 5–6 · med
    • Reading and writing numbers to 20 (hard)
  6. 8
    Reading and writing numbers to 100
    Ages 5–6 · med
    • Reading and writing numbers to 20 (hard)
  7. 12
    A Ten Is Ten Ones
    Ages 6–7 · high
    • The teen numbers (hard)
  8. 13
    Number Words to 100
    Ages 6–7 · med
    • Number Words to Twenty (hard)
    • Reading and writing numbers to 100 (hard)
  9. 14
    Reading and writing numbers to 120
    Ages 6–7 · low
    • Reading and writing numbers to 100 (hard)
  10. 16
    The two digits of a two-digit number
    Ages 6–7 · high
    • A Ten Is Ten Ones (hard)
    • The teen numbers (hard)
  11. 17
    The multiples of 10
    Ages 6–7 · med
    • A Ten Is Ten Ones (hard)
  12. 18
    A Hundred Is Ten Tens
    Ages 7–8 · high
    • A Ten Is Ten Ones (hard)
    • The two digits of a two-digit number (hard)
  13. 19
    Comparing and ordering numbers
    Ages 6–7 · high
    • The two digits of a two-digit number (hard)
  14. 20
    10 More or 10 Less
    Ages 6–7 · med
    • The two digits of a two-digit number (hard)
  15. 21
    Place value understanding and number facts
    Ages 6–7 · med
    • The two digits of a two-digit number (hard)
  16. 22
    The three digits of a three-digit number
    Ages 7–8 · high
    • A Hundred Is Ten Tens (hard)
    • The two digits of a two-digit number (hard)
  17. 23
    The multiples of 100
    Ages 7–8 · high
    • A Hundred Is Ten Tens (hard)
  18. 24
    Place value of each digit
    Ages 8–9 · high
    • The three digits of a three-digit number (hard)
  19. 25
    Ordering Numbers to 1000
    Ages 7–8 · high
    • The three digits of a three-digit number (hard)
    • Comparing and ordering numbers (hard)
  20. 26
    Representing Numbers
    Ages 6–8 · high
    • The three digits of a three-digit number (hard)
    • The two digits of a two-digit number (soft)
  21. 27
    Reading and writing numbers to 1000
    Ages 7–8 · med
    • Number Words to 100 (hard)
    • The three digits of a three-digit number (hard)
  22. 28
    10 or 100 More or Less
    Ages 7–8 · med
    • The three digits of a three-digit number (hard)
    • 10 More or 10 Less (hard)
  23. 30
    Roman numerals to 100
    Ages 8–9 · med
    • Place value of each digit (soft)
  24. 31
    Rounding to 10, 100, 1000
    Ages 8–9 · high
    • Ordering Numbers to 1000 (soft)
    • Place value of each digit (hard)
  25. 32
    Numbers to 10,000
    Ages 8–9 · high
    • Representing Numbers (hard)
    • Place value of each digit (hard)
  26. 33
    1000 More or Less
    Ages 8–9 · med
    • 10 or 100 More or Less (hard)
    • Place value of each digit (hard)
  27. 34
    Place Value to 1000
    Ages 7–8 · med
    • The three digits of a three-digit number (hard)
    • 10 or 100 More or Less (soft)
  28. 38
    Place Value Problem-Solving
    Ages 8–9 · med
    • Place value of each digit (hard)
  29. 39
    Comparing Large Numbers
    Ages 8–9 · high
    • Ordering Numbers to 1000 (hard)
    • Place value of each digit (hard)