Fractional Exponents - Discovery Education

SD School Pre-Algebra
Program 3: Roots and Rational Numbers
QuikCheck
True or False
3 3
1. −8 =− 8 __________
2. − 16 = −16 __________
3. An exponent that’s a simple fraction means the number in the numerator is the root of our
base number. _____________
4. If a fractional exponent is negative, take the reciprocal of the base number and then make
the exponent positive. ________
5. Irrational numbers are decimals that go on forever and don’t repeat. ________
6. An inequality is a mathematical expression that when both sides are multiplied by zero,
yields zero on one side and an irrational number on the other. __________
Problem Solving
3
7. 216
=
1
10. 81 2
=
4
2
13. 9
3
8. −64
=
11. 36 −1 2
=
0
14. 7
3
4
9. 81
=
2
12. 8 3
=
2
3
15. −27