How do you write $12.13+1.5$ in scientific notation?

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Answer 1 · 2017-10-11T06:30:47

$1.213 xx 10^1 + 1.5 xx10^0$

You would not really want to use scientific notation in this case - it is intended for very large or very small numbers.

But anyway, here it is:

$1.213 xx 10^1 + 1.5 xx10^0" "larr$ the powers of 10 are different.

If you do want to add them, the powers must be the same:

$=1.213 xx 10^1 +0.15 xx 10^1" "larr$ now you can add them:

$=1.363 xx 10^1$

How do you write 12.13+1.512.13+1.5 in scientific notation?