By LearningExpress Editors

ISBN-10: 1576855333

ISBN-13: 9781576855331

SAT Math necessities includes thousands of perform routines to assist scholars arrange for the tougher math part within the new SAT. that includes as a rule multiple-choice questions, the e-book comprises one 20-minute and 25-minute sections that disguise such innovations as mathematics, geometry, algebra and capabilities, statistics and knowledge research, and likelihood. integrated is entry to unfastened on-line math checks that reflect these at the SAT, with workouts immediately scored and clinically determined, plus tips to additional learn.

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Extra resources for SAT Math Essentials

Sample text

Divisibility and Factors Like multiplication, division can be represented in different ways. In the following examples, 3 is the divisor and 12 is the dividend. The result, 4, is the quotient. 12 Ϭ 3 ϭ 4 3 ͤ12 ෆϭ4 12 ᎏᎏ ϭ 4 3 Practice Question In which of the following equations is the divisor 15? a. b. 15 ᎏᎏ ϭ 3 5 60 ᎏᎏ ϭ 4 15 c. 15 Ϭ 3 ϭ 5 d. 45 Ϭ 3 ϭ 15 ෆ0ෆ ϭ 15 e. 10 ͤ15 Answer b. The divisor is the number that divides into the dividend to find the quotient. In answer choices a and c, 15 is the dividend.

If you find yourself getting anxious during the test, remember to breathe. Remember that you have worked hard to prepare for this day. You are ready. 36 C H A P T E R 5 Numbers and Operations Review This chapter reviews key concepts of numbers and operations that you need to know for the SAT. Throughout the chapter are sample questions in the style of SAT questions. Each sample SAT question is followed by an explanation of the correct answer. Real Numbers All numbers on the SAT are real numbers.

20 d. 40 e. 80 Answer d. There are two ways to answer this question. You could find the prime factorization of each answer choice, or you could simply multiply the prime factors together. The second method is faster: 2 ϫ 2 ϫ 2 ϫ 5 ϭ 4 ϫ 2 ϫ 5 ϭ 8 ϫ 5 ϭ 40. Number Lines and Signed Numbers On a number line, less than 0 is to the left of 0 and greater than 0 is to the right of 0. greater than 0 –7 –6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7 less than 0 Negative numbers are the opposites of positive numbers.