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P. 56
03Ancient Numerals Unit
2 . Write Arabic numerals in Roman numerals and Roman numerals in 2. Have the students look at the chart to see
how different numbers are made using
Arabic numerals by using the chart below. Roman numerals.
Then have the students write Roman
2=1+1= numerals as Arabic numerals and Arabic
3=1+1+1= numerals as Roman numerals.
4 = 5 1 = IV
6 = 5 + 1 = VI
9 = 10 1 = IX
11 = 10 + 1 = XI
40 = 50 10 = XL
90 = 100 10 = XC
a. b.
XIII LV
13 55
c. d.
DXIII XXV
513 25
e. f.
LVI MDC
56 1,600
3. Ancient Numerals 25
Although numbers written in Roman numerals did not become as long as Egyptian numerals, Roman
numerals were not widely spread because a new symbol was made for each place value.
4A Unit 03 039
2 . Write Arabic numerals in Roman numerals and Roman numerals in 2. Have the students look at the chart to see
how different numbers are made using
Arabic numerals by using the chart below. Roman numerals.
Then have the students write Roman
2=1+1= numerals as Arabic numerals and Arabic
3=1+1+1= numerals as Roman numerals.
4 = 5 1 = IV
6 = 5 + 1 = VI
9 = 10 1 = IX
11 = 10 + 1 = XI
40 = 50 10 = XL
90 = 100 10 = XC
a. b.
XIII LV
13 55
c. d.
DXIII XXV
513 25
e. f.
LVI MDC
56 1,600
3. Ancient Numerals 25
Although numbers written in Roman numerals did not become as long as Egyptian numerals, Roman
numerals were not widely spread because a new symbol was made for each place value.
4A Unit 03 039
