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WorksheetsLogs Practice
Total questions: 21
Worksheet time: 15mins
Name
Class
Date
1.
Write the following equation in logarithmic form:
35 = 243
35 = 243
a)
log35 = 243
b)
log2433 = 5
c)
log5243 = 3
d)
log3243 = 5
2.
Write the following equation in exponential form:
log232 = 5
log232 = 5
a)
25 = 32
b)
232 = 5
c)
52 = 32
d)
322 = 5
3.
Change to Exponential Form:
log636 = 2
log636 = 2
a)
26=36
b)
62=36
c)
362=6
d)
366=2
4.
Rewrite in exponential form:
2=log9x
2=log9x
a)
9x=2
b)
2x=9
c)
29=x
d)
92=x
5.
Rewrite as a log: 54=625
a)
log45=625
b)
log5625=4
c)
4=log6255
d)
5=log4625
6.
log525 = ?
a)
2
b)
5
c)
125
7.
Rewrite logvn = a in exponential form.
a)
va = n
b)
na = v
c)
vn = a
d)
an = v
8.
Change to Logarithmic Form:
122 = 144
122 = 144
a)
log 2 144 = 12
b)
log 12 144 = 2
c)
log 12 2 = 144
d)
log 2 12 = 144
9.
log41 =
a)
0
b)
1
c)
4
d)
DNE
10.
Simplify the following logarithmic function:
log216=
log216=
a)
2
b)
16
c)
8
d)
4
11.
When would we use this formula? A = Pe rt
a)
interest increases by fixed amount
b)
compound interest
c)
compound continuously
d)
decreases by fixed percent
12.
Evaluate log327
a)
3
b)
9
c)
27
d)
-3
13.
Solve for x : 3x = 32
a)
3
b)
3.1546
c)
.3170
d)
.0938
14.
Solve for x: 2 + 4x = 20
a)
2.0850
b)
2.1610
c)
.4796
d)
4.5
15.
Solve for x: 2(3)x = 24
a)
1.7737
b)
2.2619
c)
4
d)
.4421
16.
Solve for t: 4000=250(1.03)t
a)
15.5340
b)
1.4941
c)
93.7991
d)
.01066
17.
Solve for t: 4000=25000(1- .15)t
a)
.136
b)
.8324
c)
.08868
d)
11.2761
18.
If you see a base of e, you must use...
a)
LN
b)
LOG
c)
the force
19.
Solve for t: 5000=1000e(.08t)
a)
20.1180
b)
4.6156
c)
8.7371
20.
What are logarithms (logs) used for?
a)
To build fires
b)
To solve for exponents
c)
To solve for the initial amount
21.
When is your quiz?
a)
Friday (tomorrow)
b)
we have a quiz???
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