284

has how many significant figures?

284

Has 3 sig figs

28.5

has how many significant figures?

28.5

Has 3 sig figs

1.20

has how many significant figures?

1.20

Has 3 sig figs

0.719

has how many significant figures?

0.719

Has 3 sig figs

What is the **"Mantissa" **of this number?

1.25

0.0004

has how many significant figures?

0.0004

Has 1 sig fig

0.00090

has how many significant figures?

0.00090

Has 2 sig figs

770

has how many significant figures?

770

Has 2 sig figs

930,020

Which digit above is the uncertain digit?

930,0__ 2__0

0.73666

has how many significant figures?

0.73666

Has 5 sig figs

What is the __ exponent __of this number?

The 3 (or the 10^{3})

670.45

Which digit above is the uncertain digit?

670.4**5**

80000

has how many significant figures?

80000

Has 1 sig fig

What is meant by the words

"The Uncertain Digit?"

The "Uncertain Digit" is ** usually** the farthest digit on the right.

74.2

0.770

574

92.000

3000

has how many significant figures?

3000

Has 1 sig fig

12

has how many significant figures?

12

Has 2 sig figs

What is the **"Mantissa"** of this number?

1.38502

.0080

Which digit above is the uncertain digit?

.008**0**

600783

has how many significant figures?

600783

Has 6 sig figs

559.832

has how many significant figures?

559.832

Has 6 sig figs

What is the "Big Digit?"

The "Big Digit" is the farthest left, non-zero, digit in a number.

250.9

30337

0.000344

1.003

has how many significant figures?

1.003

Has 4 sig figs

49.924

has how many significant figures?

49.924

Has 5 sig figs

What is the __ exponent__ of this number?

-1 (or the 10^{-1})

37.003

has how many significant figures?

37.003

Has 5 sig figs

1234500

has how many significant figures?

1234500

Has 5 sig figs

0.012345

has how many significant figures?

0.012345

Has 5 sig figs

37982

has how many significant figures?

37982

Has 5 sig figs

If a number has a

zero with a line over it...

Where is the uncertain digit?

(This is an important exception to some other rules you might see on these flash cards.

The zero with the line over it is the uncertain digit.

0.0442

has how many significant figures?

0.0442

Has 3 sig figs