Grade 5

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to make three decimals whose sum is as close to 1 as possible. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes so that the sum is as close to 1/2 as possible. Source: Daniel Luevanos

Directions: Create three different mixed numbers that will make the equation true by using the digits 1 to 9 at most one time each. You may reuse the same numbers for each of the three mixed numbers. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to make the smallest (or largest) sum. Note: This problem’s difficulty can be adjusted by altering the number of digits (boxes), picking smallest or largest, or by picking either a positive, negative, or both. Source: Robert Kaplinsky

Directions: Find two fractions whose difference is 1/20. Source: Kara Colley

Directions: Find two fractions whose product is 1/20. Source: Kara Colley

Directions: Find two fractions whose sum is 1/20. Source: Kara Colley

Directions: Make the largest (or smallest) expression by using the digits 0-9, no more than one time each, in the boxes below.  Note: for 5th grade, remove the exponent to make it grade level appropriate. Source: Robert Kaplinsky with answer from Michael Fenton and his students.

Directions: Which quadrilateral has a greater area? Quadrilateral A has its perimeter equal to 44 units.  Quadrilateral B has the sum of its interior angles equal to 360 degrees. Source: Robert Kaplinsky

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to make the smallest (or largest) product. Source: Robert Kaplinsky