Significant Figures & Scientific Notation

Significant Figures

100

Every non-zero number is _______________

Significant

200

Rule 4 states that zeros at the end of a number are only significant when what is present?

A decimal

300

How many Sig. Figs. is there in this number?

0.00540

3

400

How many significant figures are there in this number?

29080.00

7

500

How many significant figures are there in this number?

0.00070300

5

Rounding Sig. Figs.

100

A student wants to round the number 51.9 to 2 significant figures, but does not know whether to round up or keep it as is. 

Which is the correct answer?

Round up

200

Round the following number to 3 significant figures.

14.283

14.3

300

Round 1,996 to 1 significant figure.

2000

400

Round 0.0091389 to 3 significant figures.

0.00914

500

Round 83590.930 to 2 significant figures

84,000

Calculations

100

The rules for calculating significant figures shows that when multiplying and dividing, you take the number with the least ______________. When adding and subtracting, you take the number with the least ______________.

Significant Figures/Decimal Places

200

Solve and round to the correct sig figs: 14.2 + 8.15

22.4

300

Solve and round to the correct sig figs: 0.040 x 12.5

0.50

400

Solve and round to the correct sig figs: 100.05 - 0.185

99.87

500

Solve and round to the correct sig figs: 

(15.45 - 3.2) / 2.00

6.15

Scientific Notation

100

Convert 45,000 to scientific notation

4.5 x 10⁴

200

Would the exponent in this number be positive or negative?

0.00048

Negative

300

Convert 6.080 x 10^-4 to standard notation

0.0006080

400

Convert 9.14 x 10⁷ into standard notation

91400000

500

Convert 0.009960 to scientific notation

9.960 x 10^-3