Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make the smallest (or largest) possible sum. Source: Robert Kaplinsky

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

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

Directions: Which circle is bigger: one with an area of 30 square units or one with a circumference of 30 units?  How do you know? Source: Robert Kaplinsky

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to make the equation true. Source: Smarter Balance

  Source: Smarter Balanced Practice Test

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make the greatest (or least) product.   Source: Bryan Meyer

Directions: Fill in the blanks with integers so that the quadratic expression is factorable.   Source: Nanette Johnson