Order Basic Algebraic Skills Discussion

Order Basic Algebraic Skills Discussion
Order 5837280
Order Basic Algebraic Skills Discussion
Working with Real Numbers
1. List all the sets in the real number system to which the given number
belongs.
(A) 15
(B)
(C) –π
(D) –100
(E)
2. Use interval notation to represent the indicated interval. State the interval
type.
(A) all numbers less than –4.5
(B) –12 ≤ x ≤ 28
(C)
(D) all negative numbers
(E) all real numbers
3. For each statement, tell which of the following properties of the real
numbers, R, with respect to the operations of addition and multiplication is
illustrated: Closure, Commutative, Associative, Additive Identity,
Multiplicative Identity, Additive Inverse, Multiplicative Inverse,
Distributive Property, Zero Factor Property.
(A) 0.45(2500) ∈ R
(B)
(C)
(D) ∈ R
(E) 23 (11 9) = (23 11) 9
(F) 50(10 4) = 500 200
(G) – = 0
(H) –99 · 0 · 100 = 0
(I)
(J)
4. Evaluate as indicated.
(A) | 20.9 |
(B)
(C) – | –80 |
(D)
(E) | a |, when a is negative
Order Basic Algebraic Skills Discussion
5. Insert , or = in the blank to make a true statement.
(A) – | –3 | ________ – | 2 |
(B)
(C) | –1.25 | ________ | 1.25 |
(D) – | –b | ________ | b |, b ≠ 0
(E) | – 15 | ________ | –30 |
For questions 6 to 15, compute as indicated.
6. –100 –50
7. 0.8 –1.9
8. –34 –(–22)
9.
10.
11. (–200)(–6)
12. –175.54 3.48 1.23
13. 125 – (–437) – 80 359
14. (–0.25)(–600)(4.5)(–50)
15.
For questions 16 to 20, evaluate the given expression.
16. (–3)
4
17. –3
4
18. 49
19. 5
–3
20. 32
21. ( )
0
For questions 22 to 30, simplify the given expression. Assume that all variables
are positive.
22. x
5 x
3
23.
24. (z
3)
4
25.
26.
27. (a
3b
6)
28. (u
–2)
4 v
7 v
–9
29.
30.
For questions 31 to 40, simplify using the order of operations. Refer to the
following guidelines as needed.
Order of operations (PEMDAS):
1. Do computations inside Parentheses (or other grouping symbols).
2. Evaluate Exponential expressions (also, evaluate absolute value, square
root, and other root expressions).
3. Perform Multiplication and Division, in the order in which these operations
occur from left to right.
Order Basic Algebraic Skills Discussion
4. Perform Addition and Subtraction, in the order in which these operations
occur from left to right.
31. (7 8)20 – 10
32. (–9
2)(5 – 8)
33. (20 – (–30))
34. 8(–2) –
35.
36. (–2)
4 · –3
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