Yep! You did it correct :)
305+213=518
1000-518= 482
The answer is there is 482 less crayons then a thousand
The Percent Proportion is defined by. amount. ... The base, denoted by the letter b, is the entire quantity or total involved. Note: The number that is the base usually appears after the word of. The amount, denoted by the letter a, is the part being compared to the whole or total.