18 in Roman numerals is XVIII. See the conversion explained and download a free XVIII number card for classroom slides and teaching materials.
Original TeachVee diagram · 1600 × 1000 pixels
UNDERSTAND THE IMAGE
18 = XVIII
X + V + I + I + I represents 10 + 5 + 1 + 1 + 1. The symbols run from larger to smaller, so their values are added. Together, the value is 18.
Try it in class
Cover 18 on the card and ask learners to read XVIII.
Explain the conversion: X + V + I + I + I represents 10 + 5 + 1 + 1 + 1. The symbols run from larger to smaller, so their values are added. Together, the value is 18.
Compare two number cards. Which represents the larger number, and how can you tell?
One image, plenty of uses
This is a diagram, not a completed worksheet. Insert the PNG into a slide, resize it in a document, or print it as a teaching visual. Use it in your classroom materials and review it for your learners before use.