Scientific Notation and Significant Figures

1
Scientific Notation and Significant Figures
2
Scientific Notation

• When it says to write your answers in the form
• Then it means put your answer in scientific
  notation!

where
3
Scientific Notation

• 9 488 800 000 000 000
• 9.48 x 1015
• 000 000 000 000 324
• 3.2 x 10-13

.
.
4
You Do 1 Write 345, 239, 235 in scientific
notation

1. 3.45 X 107
2. 3.45 x 108
3. 34.5 x 107
4. 3.45 x 10-8

Default MC Any MC All
5
.000 000 71

1. 7.1 x 10-9
2. 7.1 x 10-7
3. 71 x 10-8

Default MC Any MC All
6
5432.6 answer all that apply

1. 5.43 x 101
2. 5.4 x 103
3. 5.43 x 103

Default MC Any MC All
7
.325 671

1. 32.6 x 10-2
2. 3.26 x 10-1
3. 3.26 x 101

Default MC Any MC All
8
2.5 x 10-4

• .00025
• 0.0

9
3.24 x 108

• 324000000
• 0.0

10
Significant Figures

• 43 620
• .036821

3 sig figs -- 43600
6 is the third significant figure. Look at 4th
figure its lt 5, so dont change the 6. Make
everything else zeros
3 sig figs .0368
8 is the third significant figure because the 0
in front is a place holder. look at the next
digit. Its lt 5, so leave the 8. Leave off all
other numbers
11
Significant Figures

• 10 076
• .203 513

3 sig figs 10 100
0 is the third significant figure. The zeroes are
significant, because it lies between two non-zero
digits. The digit behind the 0 is 5 or more, so
round the 0 to a 1 and make all other places
zeroes.
3 sig figs .204
3 is the third significant figure. Look at the
next digit. It is 5 or more, so round the 3 to a
4. Leave off all other numbers.
12
Significant Figures

• 18.997

3 sig figs 19.0
9 is the third significant figure. Look at the
next digit. It is 5 or more, so round the 9 to a
0 and the 8 to a 9. Leave off all other numbers.
13
.008 6 1

• .009
• 0.0

14
523 1

• 500
• 0.0

15
4.053 3

• 4.05
• 0.0

16
647 2

• 650
• 0.0

17
3081 2

• 3100
• 0.0