How do i multiply this ? 320.7 million x 72.36 million ? do i have to write out all the zeros?

Answer 1

No you don't have to write all the zeros we use a technique that is called exponents and index

#320,700,000= 3.207 xx 10^8#
#72,360,000= 7.236 xx 10^7#

now, multiplying the above numbers using power index laws

#(3.207 xx 10^8) xx (7.236 xx 10^7)#
To muliply with the same bases the exponents (powers) are added up like: #10^8 xx 10^7= 10^(8+7)= 10^15#
and simply multiply the rest using arithmetic #3.207 xx 7.236 = 23.205852#
Thus, the answer will be #23.205852 xx 10^15#
Which is written as #2.320582xx10^16#
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Answer 2

#23,205.852 " million"#

or

#23.205852 " billion"#

No, you do not need to write all the zeros.

The question was asked with millions in words, so you can just multiply and answer in millions as well.

#320.7 # million #xx 72.36 " million"#
#= (320.7 xx72.36) " million"#
#=23,205.852 " million"#

This can now also be read as:

#23.205852 " billion"#
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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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