CHAPTER 7 / ESSENTIAL PRE-ALGEBRA SKILLS 271
Concept Review 1: Numbers and Operations
- What is the greatest integer less than −9.5? 1. __
- Express the answer to Question 1 as a fraction in two different ways. 2. __
- When is taking the square root of a number notthe inverse of squaring a number? Be specific.
- Four consecutive even integers have a sum of 76. What is the greatest of these numbers? 4. __
- If −2 < x< 2, how many possible values may xhave? 5. __
- The result of an addition is called a __.
- The result of a subtraction is called a __.
- The result of a multiplication is called a __.
- What is the difference between the product of 12 and 3 and their sum? 9. __
What is the alternativeway to express each of the following operations?
10.−(6) __ 11.÷(4) __ 12. __ 13. __
What is the inverseof each of the following operations?
14.−(6) __ 15.÷(4) __ 16. __ 17. __
Simplify withouta calculator:
- 4 − 6 ÷ 2 × 3 + 1 −(2 +1)^2 =__ 19. =__
20. =__ 21. =__
- Circle the real numbersand underline the integers:
- The realorder of operations is _____.
- Which two symbols (besides parentheses) are “grouping” symbols? _____
- If are all positive integers, what is the least possible value of x? 25. __
- List the three operations that must be performed on each side of this equation (in order!) to solve for x:
3 x^2 + 7 =34 Step 1 __________ Step 2 __________ Step 3 __________ x=__________xxx x
568 12,,,and3 75 1 333 25 7
2
5
56
7
.. ... −− 0
1212 2 2
2
()−−−()()− −1
2
6212
2
()+925162
2
−−÷()