Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make a whole number product. Source: Owen Kaplinsky

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make a true statement. Source: Owen Kaplinsky, Answer by Joseph Nguyen

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

Directions: Using the digits 1 to 9, at most one time each, place a digit in each box to make a true statement. Source: Joseph Nguyen

Directions: Using the digits 1-9, fill in the blanks to make a whole number sum. Use each digit only at most one time. Can you make all whole numbers from 1 to 9? Source: Owen Kaplinsky

Directions: Using each of the digits from 0-9 only once, fill in the boxes to make the equation true. Source: Denise White

Directions: Use the digits 1 to 9, at most one time each, to make a true statement. Source: Owen Kaplinsky

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to make a true statement. Source: Owen Kaplinsky

Directions: Use the digits 1 to 9, at most one time each, to make three equivalent fractions. Source: Owen Kaplinsky

Directions: Use the digits 0 to 9, at most one time each, to fill in the boxes so that the sum is equal to 2 wholes. Source: Joshua Nelson