LARGE NUMBERS

Read and write large Roman numerals up to thousands.

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Section 1 / 2

HUNDREDS AND THOUSANDS: D AND M

D = 500 and M = 1000 let us write large numbers. MD = 1500, MM = 2000, MMM = 3000. The largest number you can write in standard Roman numerals is MMMCMXCIX = 3999. Historically, a bar over a numeral meant ×1000.

D = 500, M = 1000

1D = 500

2M = 1000

3MD = 1500

4MM = 2000

= 0

MCMXCIX = ?

1M = 1000

2CM = 900

3XC = 90

4IX = 9

51000 + 900 + 90 + 9 = 1999

= 1999

LEADER TIP

Build up through C (100), D (500), M (1000). Write the current year in Roman numerals as a class challenge.

BEFORE THIS LESSON, TRY

Subtractive Notation

PRACTICE WITH THESE GAMES

Sort Numbers

Guess the Number

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Roman Numerals in Life

LARGE NUMBERS

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LARGE NUMBERS