5. Later, the ancient Romans used a system called Roman numerals. Its numbers were letters. We sometimes still use Roman numerals! You might see ads for Super Bowl 56. They might say Super Bowl LVI.
6. Arab and Indian mathematicians made the numbers we use today. They’re called the Hindu-Arabic numerals. You probably know them as 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9!
7. Many were suspicious of the new numbers at first. One Italian city even banned using the number zero in 1298! People worried the numbers could be easily changed. Today, Hindu-Arabic numerals are used around the world.
8. Computers depend on numbers to work. Modern life wouldn’t be possible without them. Just think about the technology you use all the time. You can count on the fact that you’ll use numbers every day!