Properties of Exponents & Scientific Notation Review

What is 0.000000685 written in scientific notation?

• $685\ x\ 10^{-9}$

• $68.5\ x\ 10^{-8}$

• $6.85\ x\ 10^{-8}$

• $6.85\ x\ 10^{-7}$

What is

 $8.038\ x\ 10^8$  in standard form?

• 80,308,000

• 80,380,000

• 83.800,000

• 803,800,000

Tags

CCSS.8.EE.A.3

What is 500,000,000,000 in scientific notation?

• 5 x 10¹¹

• 5 x 10^-12

• 5 x 10¹²

• 5 x 10^-11

Tags

CCSS.8.EE.A.3

What is the product written in scientific notation?

(1.8 x 10³) (9.1 x 10^-6)

• 16.38 x 10^-3

• 1.638 x 10^-2

• 1.638 x 10^-4

• 16.38 x 10^-2

Answer explanation

When multiplying numbers in scientific notation:

1. Multiply the coefficients.

2. Add the exponents.

3. Make sure to convert the answer to proper scientific notation.

Tags

CCSS.8.EE.A.4

Select all expression that are equivalent to

 $\frac{1}{7^{-2}}$  

•  $7^2$  

•  $\left(-7\right)^2$  

•  $-\left(7\right)^2$  

• 49

•  $\frac{1}{49}$  
  

Tags

CCSS.8.EE.A.1

Simplify the expression. Express your answer as a power.

 $\left(5^4\right)^8$  

(a)  

Tags

CCSS.8.EE.A.1

Simplify the expression. Express your answer as a power.

 $\frac{130^6}{130^4}$  

(a)  

Tags

CCSS.8.EE.A.1

Simplify the expression. Express your answer as a power.

 $49^5\ \times\ 49^{10}$  

(a)  

Tags

CCSS.8.EE.A.1

Determine how many times larger

 $6x10^4\$  is than  $2x10^2$ . Give your answer as an integer.

(a)  

Tags

CCSS.8.EE.A.4

Compare the following pairs of numbers. Select the correct symbol.

-5 x 10¹² 3 x 10^-12

• <

• =

• >

Tags

CCSS.4.NBT.A.2