Significant Figures
How many significant figures in 0.00320400?
6 sig-fig
Write the following in scientific notation
0.0004522
4.522x10-4
"The zero is not a significant figure in any number"
True or False
False
Why do we use scientific notation ?
To represent very big numbers and very small numbers
How many significant figures in 5000?
one sig-fig
Write the following in standard form
8.41x107
84100000
Write thirty with four sig-fig
30.00
59.7237×1024
is this number written correctly? Explain
Not correct because the coefficient should be less than 10
The answer of
2.345+ 1.3=
3.6
Find the answer
(2.1x103)+ (5.22x104)
2.622x103
How can you fix the answer of adding
The answer to an addition or subtraction calculation should be rounded to the same number of decimal places (not digits) as the measurement with the least number of decimal places.
(5.4 x 103) + (8.0 x 105)
5.48
4.50x 6.811=
30.6
(6.2x105)(7.2x103)
4.464x107
Find the answer of the following
12.52 + 349.0 + 8.24
369.8
(7.1 x 10–2) + (5 x 10–3)
7.6x10-2
(5.66+ 3.8)/2
5
(9x10-5)/ (3x10-8)
3x103
Find the answer of the following
2.4526 ÷ 8.4 =
0.29
(1.5 x 10–2) / (5 x 10–3)
3