<Dt> Writing paper measurements </Dt> <Dd> 25 sheets = 1 quire </Dd> <Dd> 500 sheets = 20 quires = 1 ream </Dd> <Dd> 1,000 sheets = 40 quires = 2 reams = 1 bundle </Dd>

Difference between 1 quire and 2 quire books