PreAlgebra I ACT Review

Which set of numbers show all the factors for 15? Options: 7, 8; 1, 15; 1, 3, 5, 15; 3, 5, 15; 3, 5

Which choice lists all the factors for the number 24? Options: 2, 3, 4, 6, 8, 12, 24; 2, 3, 4, 6, 8, 12, 24, 36; 1, 2, 3, 4, 6, 8, 12, 24; 1, 2, 4, 5, 6, 8, 12, 24; 2,3,4,6,8,12

Which number is prime? Options: 9, 5, 15, 1, 21

Which number is NOT prime? Options: 3, 7, 17, 21, 37

Which number is a composite number? Options: 10, 5, 7, 29, 37

GCF of 12 and 18

What is the value of the expression: ||-8 + 4| - |3 - 9||?

The symbol > could be used to make all of the following true EXCEPT: 50 _____ -28, |-22| _____ -25, -39 _____ |5|, |-20| _____ 11, 27 _____ |-26|

What is the product of the numbers in the ten thousands place, the ones place, and the hundredths place in the numeral 385,427.961?

Which of the following choices has the largest digit in the hundredths place? 2.451, 45.1137, 208.2872, 2,154.3745, 38,987.605