Roman numeral conversion
The question
98 in Roman numerals
pieces:XCVIII
pieces:XCVIII
pieces:XCVIII
XC=100 − 10
pieces:XCVIII
values:905111
XCVIII=98
- Build it from the biggest pieces down. 98 splits into 90 + 5 + 1 + 1 + 1.
- XC is a pair, not two letters each. A SMALLER letter in front of a bigger one is taken away: XC is 90 — not 110.
- Read it as "one short of the next one up": XC is 100 take away 10. That is the same idea as XL, one size larger.
- Written out in order, biggest first, those pieces are XCVIII — and reading it back adds up to 98 again, which is the check.
How it works.
- 01
Build it from the biggest pieces down. 98 splits into 90 + 5 + 1 + 1 + 1.
- 02
XC is a pair, not two letters each. A SMALLER letter in front of a bigger one is taken away: XC is 90 — not 110.
- 03
Read it as "one short of the next one up": XC is 100 take away 10. That is the same idea as XL, one size larger.
- 04
Written out in order, biggest first, those pieces are XCVIII — and reading it back adds up to 98 again, which is the check.