ADDITION ALGORITHM. See
MATHEMATICS, LEVEL 2.
ADDITION AND ITS PROPERTIES. See
MATHEMATICS, LEVEL 2.
ADDITION AND SUBTRACTION (Filmstrip) No. 737. Educational Projections Corp. 43 fr., color, 35 mm. (Mathematics, level 4) By Donovan R. Lichtenberg & Charles W. Engel. © Educational Projections Corp.; 10Nov68; JP12660.
ADDITION AND SUBTRACTION. See
MATHEMATICS, LEVEL 3.
ADDITION & SUBTRACTION ON THE ABACUS. See
MATHEMATICS, LEVEL 2.
ADDITION: BASE 5 (Filmstrip) No. 1253. Popular Science Audio-Visuals. 42 fr., color, 35 mm. (A Mathematics release) With Filmstrip guide, 5 p. © Popular Science Audio-Visuals, Inc.; 6Apr70; A196084.