Symbol/Total/Variable

SYMBOLA letter, numeral or mark which represents quantities, number, operations, or relations. Example: +, -, x, ? are symbols for operations =, <, > are symbols for relations The symbol (numeral), 67, may be used to  represent the number word, sixty-seven.

TOTAL The whole amount.

VARIABLE A letter or symbol that represents a number. The unknown. Example: N x 20 = 100 - 8 = 5

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