Praxis II Elementary Ed: Math Study Guide

Cardinal number CORRECT ANSWER Tells how many. Example: 9 players on a baseball team Ordinal number CORRECT ANSWER a number used to tell order or sequence, 1st 2nd, 3rd.... Base system CORRECT ANSWER A place-value system in which each place value is 10 times larger than the place value to its right. Scientific notation CORRECT ANSWER using powers of 10 to express large numbers (43,700 is 4.37x10 to the 4) Prime number CORRECT ANSWER a whole number that has exactly two factors, 1 and itself. (ex: 2, 3, 5...) Composite number CORRECT ANSWER a whole number greater than 1 that has more than 2 factors. (opposite of prime numbers...4, 6, 8...) Greatest common factor CORRECT ANSWER The largest factor that two or more numbers have in common. Least common multiple CORRECT ANSWER the smallest multiple that is exactly divisible by every member of a set of numbers (of 12 and 18 , the least common multiple is 36)