Scientific Notations

Scientific Notations

By Aguado Angelica

Multiple Select

What must be true for the number "a" in scientific notation. Select all that apply.

• must be less than 10

• must be greater than 1

• must be greater than or equal to 1

• must be less than or equal to 10

• must be less than 1

Multiple Choice

Write the following number in scientific notation.

360

• $$3.6\times10^2$$  

• $$0.36\times10^2$$  

• $$3.6\times10^3$$  

• $$3.6\times10^{-2}$$  

Multiple Choice

Write the following number in scientific notation.

0.052

• $$5.2\times10^1$$  

• $$5.2\times10^{-1}$$  

• $$5.2\times10^{-2}$$  

• $$5.2\times10^2$$  

Multiple Choice

Choose the smaller number.

• $$9.5\times10^4$$  

• $$9.21\times10^7$$  

Multiple Choice

Choose the smaller number.

• $$9.5\times10^4$$  

• $$9.21\times10^4$$  

Multiple Choice

Choose the bigger number.

• $$2.45\times10^{-6}$$  

• $$7.3\times10^{-8}$$  

Multiple Choice

Write the following number in scientific notation correctly.

$$942.1\times10^8$$  

• $$9.421\times10^8$$  

• $$9.421\times10^5$$  

• $$9.421\times10^{11}$$  

• $$9.421\times10^{10}$$  

Multiple Choice

Write the following number in scientific notation correctly.

$$0.00002\times10^{-5}$$  

• $$2\times10^{-11}$$  

• $$2\times10^{-10}$$  

• $$2\times10^0$$  

• $$2\times10^{-9}$$  

Multiple Choice

Evaluate the following expression.

$$\left(2.1\times10^6\right)\left(6\times10^3\right)$$  

• $$1.26\times10^{10}$$  

• $$1.26\times10^9$$  

• $$3.5\times10^1$$  

• $$3.5\times10^2$$  

Multiple Choice

Evaluate the following expression.

$$\frac{1.4\times10^0}{7.2\times10^3}$$  

• $$0.1944\times10^{-1}$$  

• $$1.944\times10^{-1}$$  

• $$1.944\times10^4$$  

• $$1.944\times10^{-4}$$