What could you do if you were a minus sign? You could subtract one number from another. You could subtract food and balloons. In every problem, you would find the difference. Discover even more answers in this installment of the bestselling MATH FUN series by Trisha Speed Shaskan With creative examples, easy-to-understand text, and engaging art, these entertaining and educational picture books books are perfect for young math lovers to read aloud or read alone.