共 50 条
- [31] THE EFFECTIVENESS OF CHECKING SUBTRACTION BY ADDITION [J]. ELEMENTARY SCHOOL JOURNAL, 1938, 38 (06): : 436 - 441
- [32] IDENTITIES COMMON TO ADDITION AND SUBTRACTION [J]. HOUSTON JOURNAL OF MATHEMATICS, 1985, 11 (03): : 335 - 343
- [35] Letters, and the addition or subtraction thereof [J]. SOCIAL ALTERNATIVES, 2012, 31 (03) : 15 - 15
- [36] RADIOLOGICAL SUBTRACTION BY COLOUR ADDITION [J]. AUSTRALASIAN RADIOLOGY, 1968, 12 (02): : 157 - &
- [39] CASCADE ADDITION AND SUBTRACTION OF MATRICES [J]. SIAM JOURNAL ON ALGEBRAIC AND DISCRETE METHODS, 1986, 7 (04): : 609 - 626
- [40] INCONSISTENCY IN ADDITION AND SUBTRACTION STRATEGIES [J]. JOURNAL OF EXPERIMENTAL EDUCATION, 1987, 56 (01): : 4 - 7