standard_description: Perform operations with numbers expressed in scientific notation, including problems where both decimal and scientific notation are used. Use scientific notation and choose units of appropriate size for measurements of very large or very small quantities (e.g., use millimeters per year for seafloor spreading). Interpret scientific notation that has been generated by technology.
problem_activity: Task
Decide which of the following equations best represents each situation.
{"table": [{"tbody": [{"tr": [{"td": [{"_value": "$$x + 2= 10$$"}, {"_value": "$$x=10+2$$"}, {"_value": "$$2\\cdot10=x$$"}]}, {"td": [{"_value": "$$x+10=2$$"}, {"_value": "$$10x=2$$"}, {"_value": "$$2x=10$$"}]}]}]}]}
After Lou poured 2 liters of water into a large jug, the jug contained 10 liters of water. How many liters were in the jug to start?
Clara ran 10 miles, which was twice as far as Nina ran. How far did Nina run?


aligns: no