Open Middle®
Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make the smallest (or largest) quotient.
Hint
What does the number on the left represent? What does the number on the right represent?
Answer
Answers will vary depending on whether decimal answers are allowed. 98 ÷ 12 is one answer for the largest quotient. 12 ÷ 98 is the smallest positive quotient and -98 ÷ 12 is the smallest negative quotient.
Note: This problem’s difficulty can be adjusted by altering the number of digits (boxes), picking smallest or largest, or by picking either a positive, negative, or both.
Source: Robert Kaplinsky