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Roman numerals to numbers mystery detective worksheets grades 3-6
Mystery Detective

Roman Numerals to Numbers

Mystery Detective Worksheets · Grades 3–6 · Ancient Rome

4th grade mathGrade 3Grade 4Grade 5Grade 6Answer keys included

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Inside the case file

Roman numerals worksheets, converting Roman numerals to numbers, and writing numbers as Roman numerals for 3rd grade, 4th grade, 5th grade, and 6th grade are all included in this Ancient Rome Mini Mystery Detective pack of math worksheets. Students convert Roman numerals both ways to eliminate suspects and unmask the villain across five detective cases set in the Forum, the Colosseum and the Emperor's palace - perfect for math centers, early finishers, sub plans, and homework. Completely no prep - just print and go.

What's Inside

  • Reading Roman numerals and writing them as numbers: XIV, XXXVIII, LXXVI, CDXIX, DCCXLIII
  • Writing ordinary numbers as Roman numerals, from single digits up to the thousands
  • Using the seven symbols I, V, X, L, C, D and M and the values they stand for
  • Applying the addition rule (XV = 15) and the subtraction rule (IX = 9, XL = 40, CM = 900)
  • Building longer numerals by splitting a number into thousands, hundreds, tens and ones
  • A Roman Numeral Help Sheet you can hand out for support or hold back for a challenge
  • Self-checking answer keys for every case

Five Ancient Rome mysteries to solve: The Market Mix-Up, The Colosseum Seats, The Legion Line-Up, The Torch Tally and The Emperor's Scroll. The cases get harder as the pack goes on, starting under 50 and finishing in the thousands. Answer keys included for every case.

What is a Mini Mystery Detective?

A no-prep detective activity where students solve math problems to cross off suspects and unmask the culprit. Skill practice plus critical thinking in one engaging, self-checking worksheet set.

When to Use This Resource

  • Math centers and rotations
  • Morning work and warm-ups
  • Early finishers
  • Sub days and emergency plans
  • Homework and spiral review
  • Small-group intervention
  • Ancient Rome and Ancient Civilizations units
  • Whole-class enrichment

Grade Levels

Designed for 3rd-6th graders. Also beneficial for struggling middle school students who need extra practice and advanced 2nd graders ready for a challenge.

Why Teachers Love Mystery Detectives

  • Zero prep - just print
  • Self-checking, so students know straight away if they have slipped up
  • Highly engaging detective hook that keeps the whole class on task
  • Built-in differentiation - five cases at rising difficulty plus an optional help sheet
  • Pairs math practice with a genuine Ancient Rome cross-curricular link
  • Answer keys for every page

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