Tag Archives: Robert Kaplinsky

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make a product that equals 800,000,000. Source: Robert Kaplinsky

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to make the greatest possible product. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make a difference with the least possible value. Source: Owen Kaplinsky and Robert Kaplinsky

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make a sum with the greatest possible value. Source: Owen Kaplinsky and Robert Kaplinsky

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make two compound inequalities that are equivalent to 2 ≤ x < 4. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make a compound inequality that has the largest interval. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box make the largest possible sum. Source: Robert Kaplinsky and Ellen Metzger

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to find the lengths of the missing sides such that the missing leg’s length is as long as possible. Source: Robert Kaplinsky

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to find two pairs of possible lengths for the missing sides. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to create a fraction that is as close to 5/11 as possible. Source: Robert Kaplinsky