Aclassroom has 4 new boxes of chalk and 6 individual pieces of chalk in use. how many total pieces of chalk are in the classroom?

The total number of pieces of chalk in the classroom will be the number of pieces in the 4 boxes in addition to the six individual pieces.

The average box of chalk holds 12 pieces of chalk
This means that 4 boxes have 12*4 = 48 pieces

Total number of pieces = 48 + 6 = 54 pieces of chalk