SAT Mc Graw Hill 2011
270 MCGRAW-HILL’S SAT Integers and Real Numbers On the SAT, you only need to deal with two kinds of numbers: integers(the positi ...
CHAPTER 7 / ESSENTIAL PRE-ALGEBRA SKILLS 271 Concept Review 1: Numbers and Operations What is the greatest integer less than −9 ...
272 MCGRAW-HILL’S SAT Which of the following is NOT equal to^1 ⁄ 3 of an integer? (A)^1 ⁄ 3 (B) 1 (C)^5 ⁄ 2 (D)^16 ⁄ 2 (E) 10 W ...
CHAPTER 7 / ESSENTIAL PRE-ALGEBRA SKILLS 273 Concept Review 1 1.−10 (Remember: “greatest” means farthest to the right on the num ...
The Laws of Arithmetic When evaluating expressions, you don’t always have to follow the order of operations strictly. Sometimes ...
CHAPTER 7 / ESSENTIAL PRE-ALGEBRA SKILLS 275 Concept Review 2: Laws of Arithmetic Simplifythe following expressions, and indicat ...
276 MCGRAW-HILL’S SAT The difference of two integers is 4 and their sum is 14. What is their product? (A) 18 (B) 24 (C) 36 (D) ...
CHAPTER 7 / ESSENTIAL PRE-ALGEBRA SKILLS 277 Concept Review 2 1.x+12 (commutative law of arithmetic) 2.− 2 x^2 + 6 x(distributiv ...
Adding and Subtracting Fractions Just as 2 apples +3 apples =5 apples, so 2 sevenths + 3 sevenths =5 sevenths! So it’s easy to a ...
CHAPTER 7 / ESSENTIAL PRE-ALGEBRA SKILLS 279 Simplify the following expressions: __ 2. 3. __ 4. __ 5. __ 6. __ 7. __ 8. __ 9. ...
280 MCGRAW-HILL’S SAT If 4 quarts of apple juice are mixed with 5 quarts of cranberry juice and 3 quarts of grape juice, what p ...
CHAPTER 7 / ESSENTIAL PRE-ALGEBRA SKILLS 281 Concept Review 3 19/35 (Use zip-zap-zup: it’s better than using your calculator!) ...
11.A Multiply by m+x: nx=m+x Subtract x: nx−x=m Factor: x(n−1) =m Divide by (n−1): x m n = − 1 nx mx+ 10.7/6 or 1.16 or 1.17 Beg ...
CHAPTER 7 / ESSENTIAL PRE-ALGEBRA SKILLS 283 Working with Ratios When you see a ratio—such as 5:6—don’t let it confuse you. If i ...
A speed is a ratio of __ to __. 2. An average is a ratio of __ to __. Define a proportion: Write the law of cross-multiplicat ...
CHAPTER 7 / ESSENTIAL PRE-ALGEBRA SKILLS 285 If xis the product of .03 and .2, then xis equiv- alent to the ratio of 6 to what ...
286 MCGRAW-HILL’S SAT Concept Review 4 distance to time a sum to the number of terms in the sum A proportion is a statement tha ...
CHAPTER 7 / ESSENTIAL PRE-ALGEBRA SKILLS 287 Word Problems with Percents The word percentsimply means divided by 100. Word probl ...
288 MCGRAW-HILL’S SAT Concept Review 5: Percents Complete the translation key: Write the formula for “percent change”: To incre ...
SAT Practice 5: Percents CHAPTER 7 / ESSENTIAL PRE-ALGEBRA SKILLS 289 David has a total of $3,500 in monthly expenses. He spend ...
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