Adding the chocolates Sam and Shreya have,
XX + LXXXI = ______
Step 1: Write the Roman numerals as Hindu Arabic Numerals.
XX = 10 + 10 = 20
LXXXI = 50 + 10 + 10 + 10 + 1 = 81
(1 Mark)
Step 2: Add the numbers.
XX + LXXXI = 20 + 81
= 101
(1 Mark)
Step 3: Write the sum in Roman numerals.
101 = 100 + 1
= C + I
= CI
Hence, XX + LXXXI = CI
(1 Mark)