## Scientific Notation Word Problems

#### Aligned To Common Core Standard:

**Grade 8 Number System** - 8.EE.A.4

What is Scientific Notation?
How wonderful it is to find out that you can write short forms instead of going on writing long digit numbers. You should be thankful for the discovery of scientific notation concepts; you can save the effort of writing continuously long digits. To put it simply, scientific notation is writing the short forms of very long numbers. Instead of writing the number in decimal form, scientific notation helps in making the short.
The number is multiplied by the power of ten and shortened.
**In Scientific Notation** -
In mathematical notation, the first number is the 'coefficient.' It is always greater than or equal to one and less than 10. For instance, to write the scientific notation for 256, the coefficient has to be shortened to 2.56
However, the second number in the equation is expressed in the form of a power of 10, written as 10 with an exponent. Combining these two numbers, you will get a kind of equation like this.
2.56 x 10^{2}. In case you see a negative exponent, it shows that the decimal has to be moved to the left.

### Printable Worksheets And Lessons

- Population Problem Step-by-Step Lesson- We do a little scientific notation subtraction to solve
this one. Very basic at first.

- Guided Lesson - The
mass of the Earth and the Sun get in the mix; along with another
population problem.

- Guided Lesson Explanation
- When answering these types of problems you will need plenty of
space to spread out your answer.

- Independent Practice -
These are such random questions. I did Google to find actual realistic
numbers for them. Who really figured out how much a dust particle
weighed?

- Matching Worksheet -Match the circumstances to their outcomes. You will find these problems a bit challenging to step up.

#### Homework Sheets

When students first see the length of problems like this they are intimidated.

- Homework 1 - In 2010, there were approximately 6 million girls living in Orange City. In 2011, the population was down to 4 million girls. How many girls lived in Orange City in 2011 in comparison to 2010? Write your answer in scientific notation.
- Homework 2 - Get them into the same power of ten to make it workable. A nice way to do that is to move the decimal one to the right on Lake City’s population. This results in losing a power of ten.
- Homework 3 - Suppose there are 3 × 10
^{6}fish in every 2 km area of sea. How many fish are there in 6 km of sea?

#### Practice Worksheets

Once students master the art of outlining, these problems become much easier for them.

- Practice 1 - 0.000078 is the wave length of white light. Can you express the measurement using scientific notation?
- Practice 2 - In India, the population was 500 million people in 2000. The total health care costs for the country at that time were $ 2.5 trillion. Calculate the average amount spent per person on health care.
- Practice 3 - wo men are working together on a project. The
first man earns 3 x 10
^{5}dollars and the second one earns 3 x 10^{4}dollars for the project. How much more money does the first man earn?

#### Math Skill Quizzes

Remind students that when the tail ends of scientific notation is the same, they cancel.

- Quiz 1 - A robbery in London resulted in 6,040,000,000 pounds being stolen. Write this number in scientific notation.
- Quiz 2 - If the population of Vatican City spends 40 million Euros in 40 days, find the amount spent in 15 days.
- Quiz 3 - Microwave ovens work at a
wave frequency of 3 x 10
^{3}MHz. What will be the wave frequency if we use 1/3 of the frequency?