Dimensional Analysis Simplified

What is the first trick to make dimensional analysis easier?

• Always start with the largest unit.

• Use a calculator for all conversions.

• Use the problem to determine the units for the answer.

• Convert everything to metric units first.

In the example of converting days to seconds, what is the first unit conversion used?

• Hours to minutes

• Days to hours

• Seconds to milliseconds

• Minutes to seconds

What is the key idea behind the second trick in dimensional analysis?

• Convert to the smallest unit first.

• Use only whole numbers.

• What goes up must come down.

• Always use fractions.

How many seconds are there in one day?

• 60,000

• 86,400

• 24,000

• 100,000

In the pizza problem, how many friends are coming over?

• Five

• Three

• Four

• Six

How many slices of pizza does each friend eat?

• Four

• Three

• Five

• Two

How many slices are there in one pizza?

• Six

• Nine

• Seven

• Eight

What is the total number of slices needed for five friends?

• 30

• 25

• 20

• 15

How many pizzas should be ordered to ensure there are enough slices for everyone?

• Two

• Three

• Four

• Five

What are the two important steps to solve any dimensional analysis problem?

• Convert to metric units and use a calculator.

• Determine the units for the answer and remember what goes up must come down.

• Start with the largest unit and use fractions.

• Use whole numbers and convert to the smallest unit first.