High School: Number and Quantity

Directions: Using the digits 0 to 9 at most one time each, place a digit in each box to find an odd modulus, an even modulus, and the smallest possible modulus. Source: Mark Ward

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

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

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to create a quadratic equation with an imaginary solution of the form ±𝒃𝒊 where 𝒃 is a whole number. Source: Bradley Springer

Directions: Using the integers -9 to 9 at most one time each, fill in the boxes to make an equation where the product’s exponent has the greatest possible value. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes twice to make an equation. You may reuse all the digits for each equation. Source: Robert Kaplinsky

Directions: Using the integers -9 to 9 at most one time each, fill in the boxes to make a real number product with the greatest possible value. Source: Robert Kaplinsky in Open Middle Math

Directions: Using the integers -9 to 9 at most one time each, fill in the boxes twice: once to make a positive real number product and once to make a negative real number product. You may reuse all the integers for each product. Source: Robert Kaplinsky in Open Middle Math

Directions: Using the digits 1 to 9 at most once, fill in the boxes to create a true statement. Source: Kate Nerdypoo

Directions: Use the digits 1- 9, at most one time each, to fill in the boxes so that the result is as close as possible to the number i. Source: David K Butler