ERIC - Search Results

Even Perfect Numbers--An Update.

Peer reviewed

Bezuszka, Stanley J. – Mathematics Teacher, 1981

A history of perfect numbers is presented, which briefly covers the 27 values known at this time. (MP)

Descriptors: Algorithms, Mathematical Enrichment, Mathematics Education, Mathematics History

A Simple Calculator Algorithm.

Peer reviewed

Cook, Lyle; McWilliam, James – Two-Year College Mathematics Journal, 1983

The problem of finding cube roots when limited to a calculator with only square root capability is discussed. An algorithm is demonstrated and explained which should always produce a good approximation within a few iterations. (MP)

Descriptors: Algorithms, Calculators, College Mathematics, Higher Education

When Does a Subtraction Algorithm Involve Borrowing?

Peer reviewed

Kolb, John R. – Mathematics Teacher, 1982

Several subtraction algorithms are analyzed to see if they involve borrowing. The main focus is on an analysis of a procedure called the residue method. The operational arithmetic which underlies the symbolic manipulations is examined and conditions where the method does and does not use borrowing are highlighted. (MP)

Descriptors: Algorithms, Arithmetic, Computation, Elementary Education

Making Averaging Easier.

Peer reviewed

Smith, Michael S. – Arithmetic Teacher, 1981

Three alternative methods of finding averages of two numbers are presented. (MP)

Descriptors: Algorithms, Arithmetic, Basic Skills, Computation

A Variation on a Very Familiar Algorithm.

Peer reviewed

Zeilberger, Doron; Todd, Philip – Mathematics Teacher, 1981

An unusual way of using the long multiplication algorithm to solve problems is presented. It is conceptually harder, since it involves negative numbers but is easier to perform once mastered, since the size of the multiplication table required is smaller than the standard one. (MP)

Descriptors: Algorithms, Mathematical Enrichment, Mathematics Instruction, Multiplication

CSMP Mathematics for the Upper Primary Grades, Part III, Student Materials: Worksheets; Which Road?; Festival of Problems 1, 2; Fishing for Numbers, Part III; Road Map; 20?; Rollerskating 37.

CEMREL, Inc., St. Ann, MO. – 1979

These are some of the individual materials needed by students using the Comprehensive School Mathematics Program's Mathematics for the Upper Primary Grades, Part III. The book of "Worksheets" contains materials that are labeled with the same letter and number as the lessons with which they are to be used. The booklets "Festival of…

Descriptors: Addition, Algorithms, Drills (Practice), Elementary Education

CSMP Mathematics for the Upper Primary Grades, Part IV, Student Materials: Worksheets; Galaxy of Problems 1, 2, 3, 4; Fishing for Numbers, Part IV; To Picture; Subtraction Problems.

CEMREL, Inc., St. Ann, MO. – 1979

These are some of the individual materials needed by students using the Comprehensive School Mathematics Program for the Upper Primary Grades, Part IV. The book of "Worksheets" contains materials that are labeled with the same letter and number as the lessons with which they are to be used. The four "Galaxy of Problems"…

Descriptors: Addition, Algorithms, Drills (Practice), Elementary Education

CSMP Mathematics for the Intermediate Grades, Part VI, Student Materials: Worksheets; Collage of Problems 1, 2, 3, 4, 5, 6.

CEMREL, Inc., St. Ann, MO. – 1979

These are some of the individual materials needed by students using the Comprehensive School Mathematics Program for the Intermediate Grades, Part VI. The book of "Worksheets" contains materials that are labeled with the same letter and number as the lessons with which they are to be used. The six "Collage of Problems" booklets…

Descriptors: Algorithms, Decimal Fractions, Drills (Practice), Elementary Education

The Arithmetic Project Course for Teachers - 14. Topic: Two Points to Two Points on a Number Line. Supplement: Graphing Number Line Jumping Rules, Part Two.