Grade 6

Directions: Using the digits 0 to 9 at most one time each, fill in the boxes to make an equivalent ratio. Source: Robert Kaplinsky

Directions: Using the digits 0 to 9 at most one time each, fill in the boxes to make an equivalent ratio with a unit rate that has greatest possible value. Source: Robert Kaplinsky

Directions: Create a set of five positive integers from 1 to 20 so that the values of their mean, median, and range are the same and have the greatest possible value. Source: Eric Berchtold, Melissa Minnix, and Robert Kaplinsky

Directions: Using the digits 0 to 9 at most one time each, fill in the boxes to make an equation where both sides have the greatest possible value. Source: Adrianne Burns and Robert Kaplinsky

Directions: Using the digits 0 to 9 at most one time each, fill in the boxes to make a true statement with the greatest possible whole without rounding. Source: Robert Kaplinsky

Directions: Using the digits 0 to 9 at most one time each, fill in the boxes to make two true statements without rounding. You may reuse all the digits for your second statement. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to make two different pairs of fractions that have a quotient of 2/3. Source: Robert Kaplinsky in Open Middle Math

Directions: Using the digits 1 to 9 at most once each, fill in the boxes to make a true statement. Source: Robert Millett

Directions: Using the digits 0 – 9, at most one time each, fill in the blanks to make a true statement. (Note: Image is not to scale) Source: Owen Kaplinsky

Directions: Using the digits 0 to 9 at most one time each, fill in the boxes to make the greatest possible product. Source: Robert Kaplinsky