Lots of pieces
Number Sense Math and Social Studies Data and probability
Brian has a lot of puzzles.  His family must love working on them. What do you wonder about his puzzles? What do you notice? Make an educated guess, about how many pieces are in a...
estimation 5.NBT 6.NS 3.MD 6th 5th 3rd 4th 2nd commutative property associative property grouping 2.OA 2.NBT