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Logarithms starter

Total questions: 9

Worksheet time: 10mins

Name
Class
Date
1.

When log 5 + log 4 is rewritten log n, what is the value of n?

(a)  

2.

log 103 - log 40

a)

log 1000

b)

log 960

c)

log 25

d)

25

e)

log 0.25

3.

log5 25 = x. Find x

(a)  

4.

log4 x =1.5

(a)  

5.

2 log 2 + log 25

(a)  

6.

Find the value of x when eln x = 4

(a)  

7.

Solve the equation 3x = 12 to 3 s.f

(a)  

8.

 12log5(1916)+2log510\frac{1}{2}\log_5\left(1\frac{9}{16}\right)+2\log_510  



(a)  

9.

Express 12logqx15\frac{1}{2}\log_qx^{15}   in the form  plogqxp\log_qx  

a)

 152logqx\frac{15}{2}\log_qx  

b)

 130logq15\frac{1}{30}\log_q15  

c)

 12log15q\frac{1}{2}\log_{15}q  

d)

 logqx30\log_qx^{30}