Grade 7 - Exponents-and-Powers

(Sample Online worksheet)

Fill in the blanks

1) =  
 
2)Find number for folowing expanded forms
A) 3102 + 0105 + 4101 + 3100 + 1104 + 0103 + 0106 =
B) 9102 + 3104 + 7103 + 9101 + 9100 =
3)Find number for folowing expanded forms
A) 4104 + 4103 + 3102 + 5101 + 7100 =
B) 0104 + 0103 + 0102 + 1101 + 0100 =

Choose correct answer(s) from given choice

4)(-7)4 = ?
a. 2387 b. 2415
c. 2408 d. 2401
5)Find the product of square of  
-5
3
  and square of  
-3
2
 
a.  
135
18
 
b.  
-45
6
 
c.  
375
6
 
d.  
25
4
 
6)Kenneth plants a carnation on 8th birthday. If the plant has one carnation to start with, and number of carnations triples every week, then how many carnations will be there after x weeks?
a. 3 x b. 3x
c. x3 d. None of these
7)22 04 = ?
a. 2 b. -2
c. 0
8)If x=7 and y=3, find the value of (xy)y
a. 9261 b. 9254
c. 9268 d. 9264
9)
a.  
-1
25
 
b.  
1
25
 
c. 25 d. -25

Check True/False

10)4825 > 2548
True    False
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