### A good answer might be:

`0.000456 = 4.56 × 10-4`

There must be only one digit to the left of the decimal place, so an answer like `45.6 × 10-5` is not in the correct format.

# Negative Values

The notation for a negative number has a negative sign in front of the first digit:

    -1.38502 × 1003 = -(1.38502 × 1003) = -1385.02

The notation for a small negative number has two negative signs: one to negate the entire number and one (in the exponent) to shift the decimal point left:

    -1.38502 × 10-3 = -(1.38502 × 10-3) = -0.00138502

### QUESTION 8:

Match the numbers in column I with the scientific notation in column II.

I | click the button |  | II
--- | --- | --- | ---
2.034 |  |  | (a) -2.034 × 100
-2.034 |  | (b) 2.034 × 102
203.4 |  | (c) 2.034 × 100
.002034 |  | (d) -2.034 × 101
-20.34 |  | (e) -2.034 × 10-2
-.02034 |  | (f) 2.034 × 10-3