That could be true. I've only ever bought the one that is white with a blue cover. THat is great but it presupposes that your child already knows what it is teaching.
Can you link to a picture (perhaps finding it on images.google.com or the page where you bought)? There are some books out there that aren't actually Singapore Math but have those words in the title, like
this one. I'm not saying that's your book, I'm just curious. I'm also not saying that those books are bad for math practice, not having used them; I just know that they don't contain Singapore Math lessons as found in the textbook or teacher's/home guides.