standard_description: Recognize angle measure as additive. When an angle is decomposed into non-overlapping parts, the angle measure of the whole is the sum of the angle measures of the parts. Solve addition and subtraction problems to find unknown angles on a diagram in real world and mathematical problems, e.g., by using an equation with a symbol for the unknown angle measure.
problem_activity: Problem 4
Pre-unit
What is the value of the 6 in 618,923?
How many times greater is the value of the 6 in 618,923 than the 6 in 27,652?


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