This math topic focuses on solving linear equations, specifically finding a missing number represented by a circle symbol within different arithmetic expressions involving addition, subtraction, multiplication, and division. Each problem presents an equation, and students must determine the correct number which makes the equation valid. This set of problems enhances algebraic thinking and problem-solving skills as it requires understanding the balance and manipulation of equations to isolate and solve for unknowns. There are multiple-choice answers provided for each question, aiding in reasoning and elimination processes.
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What number can be put in the circle to make this equation correct?