3rd grade math
posted by mythreyee .
Benny is using base ten blocks to model 57 divided by 3. he divided the tens in to equal groups. he converted the remaining 10's in to 20 ones. then he divided 20 by 3, and put the ones into equal groups of 6, with 2 leftover. what did he forget to do?

You have 10 marbles you have 5bags each bag has the same number of marbles how many marbles are in each bag