My children just completed 6th grade, but they were on decimals and fractions in 5th grade. They learned more about both in 6th grade though.
6th grade really concentrated on decimals, fractions, equations of all kinds, multi-digit multiplication/division(Up to 10 or more digits), percentages, some pre algebra, exponents, dealing with diameter, radius - that sort of thing, shapes and sides, trapezoids and perpendicular - that type thing. They also learned how to figure angles. They also did ratio's and wayyyyyyyyyyyyy more estimating than I found appropriate. They did this in 4th and 5th too. I hate estimating!! It's why I love math, it's right or wrong and estimating takes that away!!!

LOL I just thought it was a bam, bam, bam kind of thing in 6th grade. If you missed a day, you could really get behind. I didn't just feel that pertained to math though either. It seems like most subjects were really pushed through fast!
In my final parent teacher conference with my kid's teacher in 5th grade, I was told 6th grade would probably be the hardest on the kids. Both with homework and trying to keep up with the change. This teacher didn't mean the work would be the most difficult, just that going from elementary to middle school and just adjusting in general, plus the overwhelming amount of homework, that it was just a really difficult year to adjust to. Going through it, I have to agree! I know that wasn't your question, but I think you've got a 6th grader on your hands now.
