NYSCTE Multi-Subject CST Math Section Exam Questions & Answers 100% Verified

Turn 7,952 into scientific notation - ANSWER-7.952 x 10^3 Rounding - ANSWER-Digit to the right; 5 or more = round up; 4 or less = leave. i.e. 859,465 round to the thousands = 859,000 Rational numbers - ANSWER-They can be written as a fraction. i.e. 9 = 9/1; 0.25 = 1/4; 0.4 = 410 Irrational numbers - ANSWER-Cannot be written as a fraction. i.e. square root of 2 Equivalent fractions - ANSWER-You can multiple and divide the fractions by the same number. i.e. 2/5 x 3/3 = 6/15 i.e. 6/8 x 4/4/ = 24/32. Comparing fractions to see which is bigger or smaller - ANSWER-Cross-multiply. i.e. Which is bigger: 13/18 or 5/7? Multiple 13 x 7 and 18 x 5. You get 91 and 90. 91 > 90 so 13/18 > 5/7 Improper fraction to a mixed number - ANSWER-It's the quotient and a fraction of the remainder over the divider. 23/ 8 >> 8 goes into 23 >> 2 with a remainder of 7 >> 2 and 7/8. Mixed number to an improper fraction - ANSWER-Multiply whole number by denominator then add numerator. 3 and 2/5 >> 3 x 5 = 15 + 2 = 17 >> 17/5. Order of operations - ANSWER-PEMDAS. i.e. 4 + 3 x 7^2 >> 4 + 3 x 49 >> 4 + 147 = 151 Factors - ANSWER-Evenly divide the number with no remainder. i.e. factors of 4 = 1, 2, 4; factors of 10 = 1, 2, 5, 10 Multiples - ANSWER-All the numbers you get when you count by that number. i.e. multiples of 2 = 2, 4, 6, 8, 10, etc; multiples of 5 = 5, 10, 15, 20, 25, etc. Least Common Multiple (LCM) - ANSWER-Smallest multiple shared between two numbers. i.e. LCM of 6 and 8 = 24 Greatest Common Factor (GCF) - ANSWER-Largest factor shared by 2 numbers. i.e. GCF of 28 and 36 = 4. Distributive property - ANSWER-a(b+c) =(axb) + (axc) Commutative property - ANSWER-a+b=b+a and axb=bxa Associative property - ANSWER-(a+b) +c= a+ (b+c) and (axb) x c = a x (bxc) Identity property - ANSWER-a+ 0 = a and a x 1 = a Inverse property - ANSWER-a+ (-a) = 0 and a x 1/a = 1 Adding decimals - ANSWER-Line them up at decimal point and add. i.e. 14.9 + 3.108 + 0.16 = 18.168