Roman numeral conversion worksheets

Roman numerals are the number system on clock faces, book chapters, and Super Bowl logos. These free printable worksheets practice reading and writing them, converting between ordinary numbers and Roman numerals from 1 to 100.

Kid stuck on one? You don’t just get the sheet.

Roman numeral conversion
Roman numeral conversion worksheet — Numbers 1–100, free printable with answer key

The answer key prints on a separate page.

What's on this sheet

The whole system is built from letters — I, V, X, L, C for everything up to 100 — combined by two rules: letters add up when they go large to small (LXVI is 50 + 10 + 5 + 1 = 66), and a smaller letter before a larger one subtracts (IX is one less than ten, 9; XL is ten less than fifty, 40). Once a child sees those two moves, every numeral to 100 comes apart cleanly.

Why this sheet works

Sheets come in both directions. Writing a number as a numeral (66 → LXVI) makes a child build it; reading a numeral back to a number (LXVI → 66) makes them take it apart. Practicing both is what turns recognition into fluency, and the range stops at 100 so the numerals stay short enough to reason through rather than memorize.

How this one works

One question from this sheet, worked through a step at a time.

71 in Roman numerals

pieces:LXXI
pieces:LXXI
values:5010101
LXXI=71
  1. Build it from the biggest pieces down, not by counting Is. 71 splits into 50 + 10 + 10 + 1.
  2. Written out in order, biggest first, those pieces are LXXI — and reading it back adds up to 71 again, which is the check.