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Equality

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to create two true number sentences. You may reuse all the digits for each number sentence. Source: Robert Kaplinsky

Adding One-Digit Numbers (< 5) 2

Directions: Using the digits 1 to 5, at most one time each, fill in the boxes to create a true number sentences with the greatest possible sum. Source: Robert Kaplinsky

Directions: Using the digits 1 to 5, at most one time each per number sentence, fill in the boxes to create two or more true number sentences. Source: Robert Kaplinsky

Definite Integral 3

Directions: Using the digits 1 to 9 at most one time each, place a digit in each box to make a solution that is as close to 100 as possible. Source: Robert Kaplinsky

Definite Integral 2

Directions: Use the digits 1 to 9, at most one time each, to fill in the boxes and make a positive and a negative solution. Source: Robert Kaplinsky

Solving Equations with Variables on Both Sides

Directions: Using the digits 1 to 9, at most TWO times each, fill in the boxes to make an equation with no solutions. Source: Robert Kaplinsky

Exponent (Maximum Value)

Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to make a result that has the greatest value possible. Source: Robert Kaplinsky

Exponent Exploration

Directions: Using the digits 1 to 9, at most one time each, fill in the boxes to make two true number sentences. Source: Robert Kaplinsky