TY  - ADVS
ED  - Harper & Row, Publishers.
TI  - Addition and subtraction of fractions
AV  - QA117 
PY  - 1979///
CY  - White Plains, N.Y.
PB  - Center for Humanities
KW  - Fractions
KW  - Addition
KW  - Subtraction
N1  - "The skills group."; Also issued with sound accompaniment on disc
N2  - Topics covered include addition and subtraction of fractions with like denominators, of fractions with unlike denominators, and addition and subtraction of mixed numbers
ER  -