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Will the Real Division Algorithm Please Stand Up?
Peer reviewed Peer reviewed
Bates, Tom; Rousseau, Leo – Arithmetic Teacher, 1986
The mathematics associated with division is discussed, working from a theorem for the real division algorithm. Real-world, geometric, and algebraic approaches are discussed, as are related topics. (MNS)
Descriptors: Algorithms, Computation, Division, Elementary Education
Investigation of Line Crossing in a Circle
Peer reviewed Peer reviewed
Vaughn, Ruth K. – Arithmetic Teacher, 1971
Descriptors: Algebra, Algorithms, Deduction, Geometric Concepts
David's Solution
Peer reviewed Peer reviewed
Sowell, David – Arithmetic Teacher, 1971
Described is a student-discovered algorithm for solving a problem involving division by a fraction. (RS)
Descriptors: Algebra, Algorithms, Division, Elementary School Mathematics
Using a Calculator to Do Arithmetic in Bases Other than Ten.
Peer reviewed Peer reviewed
Schultz, James E. – Arithmetic Teacher, 1978
The method described here converts a given problem in a base other than ten to a related problem in base ten, solves the related problem in base ten, and converts the answer back to the original base. Limitations are discussed. (MP)
Descriptors: Addition, Algorithms, Calculators, Elementary School Mathematics
Understanding the Russian Peasant
Peer reviewed Peer reviewed
Reardin, C. Richard, Jr. – Arithmetic Teacher, 1973
A rationale is given for the Russian-peasant algorithm for multiplication indicating why it works as well as how it works. (DT)
Descriptors: Algorithms, Elementary School Mathematics, Mathematical Enrichment, Mathematics
Minicalculators and Repeating Decimals
Peer reviewed Peer reviewed
Burris, Charles H.; Hobbs, Billy F. – Arithmetic Teacher, 1978
An algorithm is provided for generating as many desired digits in the decimal representation of a rational number on a calculator. It may be used whenever the number of digits displayed on the calculator exceeds the number of digits in the denominator. (JT)
Descriptors: Algorithms, Calculators, Decimal Fractions, Elementary School Mathematics
A Test for Divisibility by Primes.
Peer reviewed Peer reviewed
Bezuszka, Stanley J. – Arithmetic Teacher, 1985
A "neat and general" divisibility algorithm for prime numbers is presented. Five illustrative examples are included. (MNS)
Descriptors: Algorithms, Calculators, Elementary Education, Elementary School Mathematics