Scientific notation and Sig fig

The answer of 0.495 in standard form is

• 4.95 x 10^-2

• 4.95 x 10^-3

• 4.95 x 10^-4

• 4.95 x 10^-1

The answer of 0.000045 in standard form is

• 4.5 x 10^-6

• 4.5 x 10^-7

• 4.5 x 10^-5

• 4.5 x 10^-4

The answer of 4775484 in standard form is

• 4775484

• 4.77*10^-6

• 4.77*10⁶

• 0.47*10⁷

The answer of 63457 in standard form is

• 6.3457*10⁴

• 6.3457*10^-4

• 63.457*10³

• 63457

The answer of 412300 in standard form is

• 4.1 x 10⁶

• 4.1 x 10⁵

• 4.1 x 10⁷

• 412300

The answer of 4.38 x 10⁴ in ordinary notation is

• 43800

• 438

• 4380

• 438000

How many significant figures are in the number 2,000?

• 1

• 3

• 4

• 2

How many significant figures are in the number 0.00120?

• 3

• 5

• 6

• 2

Which zeros are significant in the number 0.01030

• only the zero between 1 and 3 are significant

• all the zeros are significant

• only the zero at the end is significant

• the zero between 1 and 3, and the zero after the 3 is significant

Round the number 3.46 to 2 significant figures

• 3.5

• 3.0

• 3.4

• 3.3