Extra Credit Due Tuesday, Jan. 5
SCIE 0900
Name _____________________________
Date _________________________
Select the correct term for the following questions:
Leading
1.
2.
Captive
Trailing
Non-zero
What is the name (specifically) of the zeros contained between the nonzero
digits in the following number: 2008?
________________________
What is the name (specifically) of the zeros between the decimal and the
first significant digits in the following number: 0.000339?
________________________
3.
What is the name (specifically)of the digits in the following number: 2565
4.
What is the name (specifically) of the zeros at the end of the following
number: 32,000
________________________
________________________
Complete the table giving the proper number of sig figs and why
Number of
Describe why – what kind of zeros, whether
significant figures
there is a decimal or not, etc.
1.
180101
2.
1800.22
3.
180355
4.
0.1803
5.
0.01803
6.
0.18030
7.
0.00180300
8.
678.99
9.
3,450,010
10.
50,555
OVER
Give the proper number of sig figs and round each number to 2 sig figs
Number of Sig Figs
11.
0.00607000
12.
0.202237
13.
51,200.010
14.
150,777,000
15.
2690.330
16.
0.120099
17.
890.600768
18.
4,900.50
19.
0.6050
20.
10.80
21.
442
22.
40.63
23.
670.33
24.
0.0002566
25.
0.235000
Round to 2 Sig Figs
Fill in the blanks – find answers in handouts and/or course manual. One word per
blank.
The ________ number portion of a decimal number are those digits to the
___________ of the decimal place. The decimal point helps us keep track of where the
_________ place is. As we move right from the decimal point, each number place is
___________ by _______ (what number?). The number 14.504 is equal to 14.504000.
Adding extra zeros to the right of a decimal ______ ______ change it’s value.
However the numbers 145004 and 14500400 are not ________.
In scientific measurements all the digits known with ________________, plus one
_______________ digit are known as significant __________________. There will
always be some _____________________ in measurements because of the limits of
the accuracy of your measuring _____________________. We always want to strive
for measurements that are accurate and ___________________.