Grade 6

Directions: Using the digits 0-9 at most once, fill in the boxes to make the largest possible greatest common factor. Source: Howie Hua

Directions: Using the digits 0-9 at most once, fill in the boxes to make the smallest possible least common multiple. Source: Howie Hua

Directions: Using the digits 0-9 at most once, fill in the boxes to make the largest possible greatest common factor. Source: Howie Hua

Directions: Using the digits 0 through 9, without repeating any digits, find the quotient closest to 1. Source: Michael Dennis

Directions: Use the digits 1 to 9, at most one time each, to fill in the boxes so that the difference is as close to 50 as possible. NOTE: The digits used in the difference can be repeated. Source: Giselle Garica

Directions: Use the digits 0 to 9, at most one time each, to fill in the boxes so that the sum is as close to 10 as possible. Source: Giselle Garcia

Directions: Use the digits, 0 through 9, without repeats, to complete the equation below: Source: Shaun Errichiello

Directions: Use the digits 0 through 9, without repeats, to solve the problem below. Source: Shaun Errichiello

Directions: Using each of the digits 0-6 only once, make two equivalent ratios (also known as a proportion). Source: AnneMarie Untalan

Directions: Find values for a and b that will make the expressions equivalent, assuming that a does not equal b. Source: Owen Kaplinsky