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Answer Key
Chapter 1 Numbers of Algebra
Exercise 1
- 10 is a natural number, a whole number, an integer, a rational number, and a real
number.
- 8 is a rational number and a real number.
3.^8
125
- 8 is a rational number and a real number.
2
5
(^3) =
is a rational number and a real number.
- −π is an irrational number and a real number.
- −1000 is an integer, a rational number, and a real number.
- 2 is an irrational number and a real number.
- −^3
4
is an irrational number and a real number.
- −=^9 −
4
3
(^2)
is a rational number and a real number.
- 1 is a natural number, a whole number, an integer, a rational number, and a real
number.
10.^30. 001001 = 010 is a rational number and a real number. - Closure property of multiplication
- Commutative property of addition
- Multiplicative inverse property