Grade 8 M1 Integer Exponents and Scientific Notation Review

Exponential Notation

100

Simplify.

23^a x 23^b = ______

23^a+b

200

(-13) x ... x (-13) = _______

(35 times)

(-13)³⁵

300

H^-5 x H^-7 = _________

H^-12

400

The number of users of social media has increased significantly since the year 2001. In fact, the approximate number of users has tripled each year. It was reported that in 2005 thee were 3 million users of social media. Assuming the numbers of users continues to triple each year, for the next 3 years, determine the number of users for 2006, 2007, 2008.

2006 - 9 million

2007 - 27 million

2008 - 81 million

Estimating Quantities

100

The average person takes about 30,000 breaths per day. Express his number as a single-digit times a power of 10.

3x10⁴

200

The average American is responsible for about 20,000 kilograms of carbon emission pollution each year. Express this number as a single-digit integer times a power of 10.

2x10⁴

300

The sun produces 3.8x10²⁷ joules of energy per second. How much energy is produced in a year? (Note: a year is approximately 31,000,000 seconds)

1.178x10²⁷

400

The mass of Earth is approximately 5.9x10²⁴ kg, and the mass of Venus is approximately 4.9x10²⁴kg. Find their combined mass.

1.08x10²⁵ kg

Do You Know?

100

Which state did Ms Helgager grow up in?

Minnesota

200

What is the name of Ms Helgager's dog?

Misha

300

How many pets live in Ms. Helgager's home? What are they?

2, 1 dog and 1 snake

400

What is Ms. Helgager's favorite thanksgiving dish?

Pie

Good to Know

100

When is your summative assessment for Module 1?

November 12

200

What time does this class end today?

12:06

300

Why are we allowed to wear animal print today for $1?

In honor of Chloe Schnider

400

You've earned DOUBLE points!

Give your team an extra 400 points :)