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HESI Mathematics / HESI Mathematics : LATEST-2022, BEST DOCUMENT FOR EXAM
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  • Course
  • HESI A2 (HESI)
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  • Chamberlain College Of Nursing
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  • HESI Math

HESI Mathematics / HESI Mathematics : LATEST-2022, BEST DOCUMENT FOR EXAMHESI Mathematics / HESI Mathematics : LATEST-2022, BEST DOCUMENT FOR EXAMHESI Mathematics / HESI Mathematics : LATEST-2022, BEST DOCUMENT FOR EXAMHESI Mathematics / HESI Mathematics : LATEST-2022, BEST DOCUMENT FOR EXAM

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  • January 24, 2022
  • 3
  • 2021/2022
  • Exam (elaborations)
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  • hesi
  • hesi mathematics

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  • HESI A2 (HESI)
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HESI Mathematics
Roman Numerals
Roman numerals is the ancient number system used in the Roman Empire. In select
situations, they are still used as an alternative to the modern numeral system. Roman
numerals are based on the idea of adding, and in special cases, subtracting, to
represent each number. The following table provides a list of the most commonly used
Roman numerals today and their meaning.

Roman Numeral Numerical Value
I 1
V 5
X 10
L 50




m
C 100




er as
D 500




co
eH w
M 1000
Roman numerals are written from left to right, greatest numeral to smallest. As you read




o.
them, add together the symbols for the numeric value.
rs e
ou urc
Example:
o

Erica is visiting Rome for vacation. She sees an old building with “MCCLIII” written on it.
What number is this?
aC s
vi y re



Looking at our reference chart, we see the first symbol, M, is 1000. CC is 100+100, L is
50, and III is 1+1+1. Adding this together shows that:
1000 + 100 + 100 + 50 + 1 + 1 + 1 = 1253 as the number on the building.
ed d
ar stu




There are a few special cases where instead of adding, we subtract to find the meaning
of the Roman numeral. These special cases occur when we want to avoid stringing four
instances of a symbol together (like IIII for 4 or VIIII for 9). Instead, we use one of the
is




symbols for a power of ten (I, X, C, M) and place it before a symbol with a greater
numeric value. An example of the first time this would occur is for the value of four. This
Th




is written as IV, or “5 minus 1.” The next time this occurs is for the number nine, IX, or
“10 minus 1.” Forty is denoted by XL, or “50 minus 10,” while ninety is XC, or “100
minus 10.”
sh




Example:

Jerome is in class and wants to toss a note inconspicuously to let his friend know which
anniversary of a big football game finale is coming up. He knows it’s going to be the



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