01201agm a2200325u 4500 996507830102311 20260227104101.0 g--c-bfj 781004s1979 xxu057 e 0sneng c 78720240 /F (TU)000650783UTK01 683891 (OCoLC)05644031 Center for Humanities DLC m.c. TKN TKNN QA117 QA107.C6 pt.6 Addition and subtraction of fractions. [slide] / Harper & Row, Publishers, inc. White Plains, N.Y. : Center for Humanities, 1979. 57 slides : col. ; 2x2 in. & cassette (1/2-track. mono. 38 min.), teacher's guide, and worksheet. Competency skills in arithmetic ; module 6 "The skills group." Also issued with sound accompaniment on disc. Topics covered include addition and subtraction of fractions with like denominators, of fractions with unlike denominators, and addition and subtraction of mixed numbers. Fractions. Addition. Subtraction. Harper & Row, Publishers. primo 344 344