Exponents
Unit Review
Lessons 1-5
Simplify.
1. x5y2(x-3y5)
2. -3x4
9x5
3. 3x + 10x + 7y
4. (4x3y)2
5. a0
6. x2 = 64
7. x2 = .16
8. − 100
9.
10.
3x2 y * 4 xy
5 5( −2 20)
11.
9a
3
12.
2
2 3
13. − 12 + 3 3
14. 2 6 − 2 24
15. (8 x 106) + (3.2 x 107)
16. (9.3 x 1012) - (300 x 1010)
17. (2.33 x 10-6) x (8.19 x 103)
18. 100 x 108 / 25 x 10-2
19. 10(1 + 3b) = -20
20. 8(1+ 5x) + 5 = 13 + 5x
21. -11 – 5a = 6(5a + 4)
22. -2 = -(n – 8)
State whether rational or irrational.
23. π
24.
25.
19
5
8
Change each decimal to a fraction.
26.
27.
28.
.4
.3
1.5
Change each fraction to a decimal.
29.
1
5
30.
5
2
3