Question

Notes on how to subtract/add with scientific notation

Answer 1

1)Take the smallest power common

2) simply the bracket

3) multiply with the power taken common

Example:

5×10⁶ - 4×10³

Smaller power is 3, so take 10³ common:

10³[(5×10²) - 4]

10³[500 - 4]

10³(496)

496×10³

4.96×10⁵