Practice the questions of McGraw Hill Math Grade 8 Answer Key PDF Lesson 10.2 Powers to secure good marks & knowledge in the exams.

Exercises

CALCULATE

Question 1.
(54)3
512
Explanation:
(am)nÂ =am xÂ nÂ
(54)3 = 54 x 3 = 512
Question 2.
(87)5
835
Explanation:
(am)nÂ =am xÂ nÂ
(87)5 = 87 x 5 = 835
Question 3.
(1410)7
1470
Explanation:
(am)nÂ =am xÂ n
(1410)7 = 1410 x 7 = 1470
Question 4.
(320)8
3160
Explanation:
(am)nÂ =am xÂ nÂ
(320)8 = 320 x 8 = 3160
Question 5.
764
71296
Explanation:
(am)nÂ =am xÂ nÂ
(54)3 = 56 x 4 = 71296
Question 6.
824
816
Explanation:
am = a x a x a …. m times
24 = 2 x 2 x 2 x 2 = 16
82x2x2x2Â = Â 816
Question 7.
1983
19512
Explanation:
am = a x a x a …. m times
83 = 8x8x8 = 512
198x8x8Â = Â 8512
Question 8.
1593
15729
Explanation:
am = a x a x a …. m times
93 = 9x9x9 = 729
159x9x9 =Â  15729
Question 9.
(83)8
824
Explanation:
(am)nÂ =am xÂ nÂ
(83)8 = 83×8 = 824
Question 10.
(25)6
230
Explanation:
(am)nÂ =am xÂ nÂ
(25)6 = 2 5x 6 = 230
Question 11.
(74)15
760
Explanation:
(am)nÂ =am xÂ nÂ
(74)15 = 74×15 = 760
Question 12.
(135)3