Exponents
Grade : 8
I. Find the value of x
1. (¾)4 = 81/x
2. (x/5)2 = 16/25
3. (2/5)5 = 2x / 5x
4. Express 27/64 as powers of rational numbers
5. Express (-8/27) as powers of rational numbers
6. Find the reciprocal of
a. 33
b. (1/3)5
c. (-3/4)3
d. (1/3)-3
7. Simplify (2/3)-3 ÷ (4/3)-2
8. Simplify (5-1 x 2-1) ÷ 6 -1
9.Simplify (3/4)-4 ÷ (5/4)-3
10.Simplify (6-1 x 3-2) ÷ 7-2
ANSWERS
1. x = 256
2. x= 4
3. x=5
4. (3/4)3
5.(-2/3)3
6. a)1/27
b)35
c.)(-3/4)-3
d)(1/3)3
7. 6
8. 3/5
9. 500/81
10. 49/54
No comments:
Post a Comment