Evaluating Expressions & Equations with Exponents (Grade 8)

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Evaluating Expressions & Equations with Exponents

1. 
Evaluate. [math]6^2xx6^-4[/math]
  1. 0.022
  2. 0.028
  3. 0.020
  4. 0.029
 
2. 
Evaluate. [math]4^-3xx4^2[/math]
  1. 0.25
  2. 0.025
  3. 0.156
  4. 0.125
3. 
Evaluate. [math]3^2xx3^4[/math]
  1. 729
  2. 279
  3. 972
  4. 792
 
4. 
[math]5^-2 xx 5^5[/math] is equivalent to which of the following?
  1. [math]78,125[/math]
  2. [math].008[/math]
  3. [math]125[/math]
  4. [math]51,278[/math]
5. 
[math]2^-2 / 2^-5[/math] is equivalent to which of the following?
  1. [math]2[/math]
  2. [math]1/2[/math]
  3. [math]8[/math]
  4. [math]1/8[/math]
 
6. 
Evaluate. [math]2^5xx2^3[/math]
  1. 265
  2. 0.25
  3. 256
  4. 652
7. 
Evaluate. [math]5^3xx5^-6[/math]
  1. 0.08
  2. 0.008
  3. 0.04
  4. 125
 
8. 
Evaluate. [math]6^2xx6^4[/math]
  1. 45,656
  2. 46,666
  3. 46,656
  4. 65,456
9. 
Evaluate. [math]4^3xx4^2[/math]
  1. 2,410
  2. 1,240
  3. 1,024
  4. 1,224
 
10. 
Evaluate. [math]2^5xx2^-3[/math]
  1. 4
  2. 8
  3. -4
  4. -8
11. 
Evaluate. [math]5^3xx5^6[/math]
  1. 1,953,215
  2. 1,915,352
  3. 1,935,125
  4. 1,953,125
 
12. 
Evaluate. [math]3^-2xx3^4[/math]
  1. 9
  2. 0.111
  3. -9
  4. -0.111
13. 
[math]4^3/12^-2[/math]
  1. [math]-4/9[/math]
  2. 2304
  3. 9216
  4. [math]9/4[/math]
 
14. 
[math]4^3-3^2[/math]
  1. [math]1/55[/math]
  2. 55
  3. 576
  4. 73
15. 
[math]6^3/3^-2[/math]
  1. 24
  2. 1944
  3. [math]1/24[/math]
  4. 225
 
16. 
[math]3^5/2^3-2^2[/math]
  1. [math]234/4[/math]
  2. [math]211/8[/math]
  3. [math]243/4[/math]
  4. 1940
17. 
[math]6^4/3^2[/math]
  1. [math](1/144)^-1[/math]
  2. 144
  3. 1/144
  4. Both A and B
 
18. 
[math]-5^3+2^3[/math]
  1. -133
  2. [math]-999/8[/math]
  3. 133
  4. -117
19. 
[math]4^2/2^5[/math]
  1. [math]-1/512[/math]
  2. 400
  3. 0.5
  4. None of the above
 
20. 
[math]6^3xx3^-2[/math]
  1. 24
  2. 1944
  3. [math]1/24[/math]
  4. 225

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