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
Read More »Expressions & Equations
Equations of Perpendicular Lines
Directions: Using the integers -9 to 9 (excluding 0) at most one time each, fill in the blanks to create two distinct perpendicular lines. Source: Louise Pepper with answers from the students of Kings College Alicante, Spain
Read More »Scientific Notation 2
Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to make a product that equals 800,000,000. Source: Robert Kaplinsky
Read More »Perfect Squares
Directions: Using the digits 1- 9, at most one time each, to fill in the boxes to make each expression evaluate to a perfect square number. Extension/Challenge: What is the largest/smallest square number you can make? How many different perfect square numbers could be made? Source: Erick Lee
Read More »Cubed Roots
Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to make a true statement. Source: Ryun Deckert and Brock Montgomery
Read More »Differences in Scientific Notation
Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to make the largest (or smallest) absolute difference. Source: Marie Isaac
Read More »Laws of Exponents
Directions: Using the digits 1 to 20, at most one time each, fill in the boxes to create equivalent expressions. Source: Shaun Errichiello
Read More »Create a System of Two Equations
Directions: Using the digits 1 to 30, at most one time each, fill in the boxes to create a system of two linear equations where (3, 2) is the solution to the system. Source: Daniel Luevanos
Read More »Negative Exponents – Closest to Zero
Directions: Using the digits 0 to 9, at most one time each, fill in the boxes to make a result that is as close to zero as possible. Source: Daniel Luevanos
Read More »Negative Exponents
Directions: Using the digits 0 to 9, at most one time each, place a digit in each box to make a true statement. Source: Daniel Luevanos
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