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 7
Pre-unit
The line plot shows the lengths of some toothpicks in inches.
[IMG]
How many measurements are there?
What is the difference between the longest and shortest toothpicks?


aligns: no