The Fantastic Formula (V2CTM Reflection October 1981)
Arithmetricks

An Arm and A Leg Puzzle (GAMES Magazine JULY/AUGUST 1981)
Who's Buried in Grant's Tomb? (GAMES Magazine NOV/DEC 1981)

Second Guessing -- Approximating
Number Trivia

Questions About numbers
Third Rate Quiz (GAMES Magazine August 1994)

Calculatrivia I (GAMES Magazine NOV/DEC 1978)
Calculatrivia II (GAMES Magazine NOV/DEC 1979)

Calculatrivia III (GAMES Magazine July/August 1981)
Calculatrivia IV (GAMES Magazine JULY 1986)

Who's Been Paying Attention?
More Trivia

Trivia Magic Square
Another Trivia Magic Square