OAE Elementary Education Subtest 2 (019) Practice Exam questions with correct answers

Natural numbers - Answer All numbers 1, 2, 3, 4... They are the numbers you usually count and they will continue on into infinity. Whole numbers - Answer All natural numbers but it includes 0 as well e.g. 0, 1, 2, 3, 4... Integers - Answer Include all whole numbers and their negative counterpart e.g. ...-4, -3, -2, -1, 0,1, 2, 3, 4,... Place natural numbers, whole numbers and integers in the correct order based upon their subsets. - Answer Natural numbers are whole numbers, whole numbers are integers. Which of the following numbers is closest in value to 2.5 x 10^-2? A. 0.021 B. 2.3 C. 2/10 D. 22/100 - Answer A. 0.021 What is prime factorization? - Answer Finding which prime numbers multiply together to make the original number. What is a prime number? - Answer A whole numb