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.