b. If \( 764-\square=3 \)

To solve for the missing number, you can rearrange the equation: \( 764 - \square = 3 \) becomes \( \square = 764 - 3 \). Now, when you subtract 3 from 764, you get 761. So, the missing number is 761! Have you ever wondered how simple arithmetic like this shapes our understanding of numbers? Math isn't just about the numbers; it’s about relationships and problem-solving. Whether you're dividing a pizza or calculating your points in a game, math is always there, making things clearer! Fun fact: The neatness of subtraction can actually be visualized! Picture taking away three apples from a basket of 764—imagine that grand heap! Each operation in math can create a vivid picture in your mind, making it easier to grasp concepts and enjoy numbers!