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

Read More »## Robert Kaplinsky

## Maximizing Rectangular Prism Volume

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to list the dimensions of a rectangular prism with the greatest volume. Source: Robert Kaplinsky

Read More »## Maximizing Rectangular Prism Surface Area

Directions: Using the digits 1 through 9 at most one time each, fill in the boxes to list the dimensions of a rectangular prism with the greatest possible surface area. Source: Robert Kaplinsky

Read More »## Converting Between Fractions and Decimals

Directions: Using the digits 0 to 9 at most one time each, fill in the boxes so that the fraction equals the decimal. Source: Robert Kaplinsky

Read More »## Linear Function from Table of Values

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes to create a table of values that represent a linear function. Source: Robert Kaplinsky

Read More »## Graphing Points on a Coordinate Plane

Directions: Make four points using the integers -4 to 4 at most one time each so that each point is in a different quadrant. Source: Robert Kaplinsky

Read More »## Solution of Two Linear Equations

Directions: Using the Integers 0-9 (without duplication), provide four sets of points that represent two distinct lines. These lines can be written as two linear equations. Then provide a fifth point that represents the intersection (or solution) of those equations. Line 1: (__, __) and (__, __) Line 2: (__, __) and (__, __) Solution (__, __) Source: Bryan Anderson

Read More »## Multiplying a Two-Digit Number by a Single-Digit Number

Directions: Using the digits 1 to 4 at most one time each, fill in the boxes to make the largest possible product. Source: Robert Kaplinsky

Read More »## Finding the Length of a Right Triangle’s Altitude

Directions: The black triangle is a right triangle with legs 8 and 6. The vertices are at the points (0,0), (0,8), and (6,0). The red line segment is perpendicular to hypotenuse. Find the length of the red line segment. Source: Kate Nerdypoo

Read More »## Parallel Lines and Perpendicular Transversals

Directions: Using the digits 1 to 9 at most one time each, fill in the boxes so that 2 of the lines are parallel and the third line is a transversal that is as close to perpendicular to the parallel lines as possible. Source: Shelli Foust and Robert Kaplinsky

Read More »