My 6th grade daughter is tackling subtracting negative numbers, which can be a tricky thing to explain ;) I found a great page with explanations though, so I thought I'd share it in case it might be helpful to anyone... Adding and Subtracting Positive and Negative Numbers Adding and Subtracting Positive and Negative Numbers How to Add and Subtract Positive and Negative Numbers Numbers Can be Positive or Negative: Negative Numbers (−) Positive Numbers (+) (This is the Number Line... View on www.mathsisfun.com Preview by Yahoo