Answer:
Because 300 divided by 10 is 30
Explanation:
If someone asks for 1/10 of a number, you are being asked to divide that number by 10. So, 1/10 of 300 = 300/10. 300/10 = 30. In other words, if you write 30 on a piece of paper 10 times and add it together, you'll get 300!