If You Were a Minus Sign
If You Were a Minus Sign
ISBN: 9781404847880
出版年: 2008-9
页数: 24
定价: $ 7.95
内容简介
If you were a minus sign, you would subtract one number from another. You could subtract food and balloons. In every problem, you would find the difference. What else could you do if you were a minus sign?