Question

(3.33 X 10^4 km) + (2.22 X 10^5 km) Scientific notation

Answer 1

255,300

Explanation:

3.33×10^4=33,300. Then 2.22×10^5=222,000. Now add 33,300 plus 222,000 which is 255,300

Answer 2

`2.553 \cdot 10^5`

Explanation:

(3.33 X 10^4 km) + (2.22 X 10^5 km)

First multiply the exponent with the given decimal number

`3.33 \cdot 10^4= 3.33 \cdot 10000= 33300`

`2.22 \cdot 10^5= 2.22 \cdot 100000= 222000`

Now we add both the numbers

`33300 +222000= 255300`

Now write the answer into scientific notation

Move the decimal point after 2. we move 5 places to the left

So it becomes
`2.553 \cdot 10^5`