1. FACTOR – LABEL Method ALWAYS works because of these two principles:
A fraction equals ______ when the _______________ and __________________ are equivalent
ONE
NUMERATOR
DENOMINATOR
Anything ______________ by ONE is _______________
MULTIPLIED
UNCHANGED

2. PRACTICE 3 days 255 in 24 hr 60 min 60 sec 1 day 1 hr 1 min
2.54 cm = 1 inch
PRACTICE
3 days = _________ s
24 hr
60 min
60 sec
3 days X X X =
1 day
1 hr
1 min
255 inches = _________ m
255 in X

3. PRACTICE 2.54 cm = 1 inch 7,000 cm3 = ________ in3
600,000 s = ________ weeks

4. Factor Label in TWO Dimensions
1.61 km = 1 mile
1000 m = 1 km
Factor Label in TWO Dimensions
25 m/s = ________ km/hr
180 mph = _________ m/s

5. Scientific Notation Writing numbers as powers of TEN 600,000 =
600,000 =
6 x x x x x 10 =
6 x 105
7  10     10 =
7 x x x x x =
= x 1
105
= x 10-5

6. 34,000,000 =
3.4
x 107 = 8
x 10-7 =
6.78
x 10-4
7.25
x 101
72.5 = =
9.9 x

7. 1.1 x 10-20 Scientific Notation on Calculator EE Exp
“ TIMES TEN TO THE ”
Try this...
8.2 x 10-9
7.4 x 1011
1.1 x 10-20

8. Factor Label
w/ Metric Prefixes
METER m
LITER l or L
GRAM g
BASE UNITS

9. Pico p Tera T
Nano n Giga G
Micro  Mega M 106
Milli m Kilo k 103
Centi c Hecto h 102
Deci d Deka da 101

10. 8.1  L = ____________ML
To base unit
To desired unit
1 x 10-6 L
8.1 L 1 ML
8.1 x ML
X X = 1 L
1 x 106 L
25 pm = ______ cm

11. Significant Figures
IMPORTANT
NEEDED
MEANINGFUL

12. Sig Fig Rules 1. Non-zeros ARE significant
124
3 sig figs
46.71
4 sig figs
2. Zeros between sig figs ARE significant
400,001
6 sig figs
30.5
3 sig figs
3. Place-holders ARE NOT significant
300
1 sig figs
.0025
2 sig figs
4. Exact zeros ARE significant
3.00
3 sig figs
.20
2 sig figs

13. 90.02 2300 .00005 .0402 1.0020 4 sig figs 2 sig figs 1 sig fig
1. Non-zeros ARE significant
2. Zeros between non-zeros ARE significant
3. Place-holders ARE NOT significant
4. Exact zeros ARE significant
90.02
2300
.00005
.0402
1.0020
4 sig figs
2 sig figs
1 sig fig
3 sig figs
5 sig figs

14. 200 200.0 2020 .002 .200 1 sig figs 4 sig figs 3 sig fig 3 sig figs
1. Non-zeros ARE significant
2. Zeros between sig figs ARE significant
3. Place-holders ARE NOT significant
4. Exact zeros ARE significant
200
200.0
2020
.002
.200
1 sig figs
4 sig figs
3 sig fig
3 sig figs

15. Rounding Sig Figs 20,000 23,000 23,500 23,460 23,456.79 1 sig fig

16. Rounding Sig Figs and Factor Label 8.1 m 100 cm 1 inch 318.8976 cm 1 m
X X = 1 m
2.54 cm
320 cm 2
sig figs
Round to 2 sig figs

17. Little
Practice Paper
quiz MON