Question

Perform the following operationand express the answer inscientific notation.6.50×10^5 +5.40x10^4[ ? ] × 10 [ ² ]Coefficient (green)Exponent (yellow)

Answer 1

7.04 x 10⁵.

Step-by-step explanation:

Remember that when adding or subtracting numbers in scientific notation, the exponents must be the same.

In this case, we can adjust 5.40 x 10⁴ to 0.540 x 10⁵ and add it to 6.50 x 10⁵ and we obtain:

`6.50\cdot10^5+0.540\cdot10^5=7.04\cdot10^5.`

You can see that we just sum the bases, ie 6.50 and 0.540, and we put the same exponent of 10. So, the answer would be 7.04 x 10⁵.