# Tag Archives: DOK 3: Strategic Thinking

## Closest Difference to 200

Directions: Using the digits 1-9 at most one time each, find the closest difference to 200. Source: Jessica Goree

## Supplementary Angles 2

Directions: Using the digits from 1 – 9, at most one time each, find the measures of the two angles that form supplementary angles where their difference is as large as possible. Source: Debra Schneider

## Supplementary Angles

Directions: Using the digits from 0 – 9, at most one time each, find the measures of the two angles forming supplementary angles as close as possible in size. Source: Debra Schneider

## Balanced Equations 2

Directions: Use the operation symbols (+, -, x, ÷) and equal sign (=) to make a true equation. Operation symbols may be used more than once. What is the least value for each part of the equation? What is the greatest value for each part of the equation? Can you complete the equation with at least one of each symbol? …

## Multiplication Decisions

Directions: Using the digits 5, 6, 7, and 8 exactly once and picking one of the expressions below, create the greatest product possible out of the two expressions. Source: Howie Hua

Directions: Use the digits 1-9, at most once, to complete the equation. What is the greatest result you can make? What is the least result you can make? Source: Molly Rawding

## Scientific Notation 2

Directions: Using the digits 1 to 9 at most twice each, make the sum of the four expressions the greatest possible value. Source: Catriona Shearer

## Area of a Rectangle

Directions: Using the digits 1 – 9, at most once each, fill in the blanks to make it so that the value for the area of the rectangle (in square units) is greater that the value for the perimeter (in linear units). What is the greatest difference you can find between the area and perimeter? What is the least difference …