Grade 4

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

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to create a true statement. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make the greatest/smallest difference. Source: Ellen Metzger

Directions: Using the digits 1-9 at most one time each, find the closest sum to 10,000 using two 4-digit addends. Source: Jessica Goree

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to make a pattern that changes by the same amount each time. Source: Brian Errey

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to create numbers on the number line. Source: Anne Oliveira

Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to create a true statement. Source: Nova Katz

Directions: Using the digits 5, 6, 7, and 8 exactly once and picking one of the expressions below, create the greatest product possible out of the two expressions. Source: Howie Hua

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to create a rectangle with an area as close to 500 and a perimeter as close to 100 as possible. Source: Owen Kaplinsky

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make each statement true. Source: The Open Middle Elementary Team and Dean Johnstone