Sir Jeff P. [tsoktok.blogspot.com]
Lecture 1.1
Oct 26, 2014
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Sir Jeff P. [tsoktok.blogspot.com]
WHAT’S THE DIFFERENCE BETWEEN THE TWO GIVEN MEASUREMENTS?
A. 34 g B. 34.00 g
Sir Jeff P. [tsoktok.blogspot.com]
Sir Jeff P. [tsoktok.blogspot.com]
The significant figures (also
called significant digits) of a
number are those digits that
carry meaning contributing to
its accuracy.
Sir Jeff P. [tsoktok.blogspot.com]
1) Non-zero digits are SIGNIFICANT
2) Zero’s between two significant digits are SIGNIFICANT
3) Final zero/ trailing zeros in decimal portion only are Significant
Sir Jeff P. [tsoktok.blogspot.com]
4) When zero’s are not
5) Significant Figures of a constant numbers are INFINITE
SIGNIFICANT??
a) Space holding zeros on numbers less than one
b) Zero to the left of the decimal point on numbers less than one
c) Trailing zeros in a whole number
Sir Jeff P. [tsoktok.blogspot.com]
DETERMINE THE CORRECT NUMBER OF SIGNIFICANT FIGURES
1) 29.043
2) 105.03
3) 0.00070
4) 25 000
5) 3.1416… (pi)
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5 significant figures
5 significant figures
5 significant figures
5 significant figures
5 significant figures Sir Jeff P.
[tsoktok.blogspot.com]
IN ADDITION AND SUBTRACTION
Express your answer with the same Number of Decimal places as
The quantity with the least number of decimal places
Sir Jeff P. [tsoktok.blogspot.com]
IN MULTIPLICATION AND DIVISION
Express your answer with the same number of S.F as the quantity of
with the fewest Significant Figure
Sir Jeff P. [tsoktok.blogspot.com]
Sir Jeff P. [tsoktok.blogspot.com]
STANDARD SCIENTIFIC NOTATION is a number from 1 to 9 followed by a decimal and the remaining significant figures and an exponent of 10 to hold place value.
Sir Jeff P. [tsoktok.blogspot.com]
IN ADDITION AND SUBTRACTION
Quantities must be express in the same powers of TEN, add/subtract the base numbers and express the
answer with the same power of ten.
Sir Jeff P. [tsoktok.blogspot.com]
IN MULTIPLICATION
Get the product of the base numbers times Ten raised to the SUM of their exponents
Sir Jeff P. [tsoktok.blogspot.com]
IN DIVISION
Get the QUOTIENT of base numbers times ten raised to the DIFFERENCE of their exponents
Sir Jeff P. [tsoktok.blogspot.com]
Sir Jeff P. [tsoktok.blogspot.com]
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