chapter 2 quiz review. 6 and 14 lcm = 42 6 = 2 x 3 14 = 2 x 7 lcm = 2 x 3 x 7
TRANSCRIPT
CHAPTER 2 QUIZ REVIEW
6 and 14
LCM = 42 6 = 2 x 3 14 = 2 x 7 LCM = 2 x 3 x 7
54 and 117
GCF = 954 = 2 x 3 x 3 x 3117 = 3 x 3 x 13
Tell whether the number is divisible by 2, 3, 4, 5, 6, 9 or 10.
1,125
1, 125 is divisible by: 3, 5, and 9
1 + 1 + 2 + 5 = 9 and 9 is divisible by 3 and 9
1,125 has a 5 in ones place, so is divisible by 5
ANSWER:
Film ScheduleFeature Length
Cartoons 24 minutesAction 60 minutesComedy 48 minutes
Short films are shown continuously at the state fair. If the three films start together at 9:00AM, what time will it be when they all start at the same time again?
SOLVE.
ANSWER:
1:00 PM 24 = 2 x 2 x 2 x 360 = 2 x 2 x 3 x 5
48 = 2 x 2 x 2 x 2 x 3 LCM = 24 x 3 x 5 = 240
240 ÷ 60 = 4 hours
9AM + 4 hours = 1 PM
Chris wants to buy storage boxes that are all the same height and can be stacked on 24-inch or 30 inch shelves with no spare space above or below. What is the tallest box that will work?
The tallest box that will work is 6 inches tall.24 = 2 x 2 x 2 x 330 = 2 x 3 x 5GCF = 2 x 3 = 6
ANSWER:
Fill in the blank.
A diagram that uses branches to show how a number can be
written as the product of prime numbers is called a __________.
ANSWER:A diagram that uses
branches to show how a number can be written as
the product of prime numbers is a factor tree.
Fill in the blank.
__________________ is an expression that represents repeated multiplication of a
factor; it has 2 elements, the base and the exponent.
Power is an expression that represents repeated multiplication of a factor; it has 2 elements, the
base and the exponent.
Fill in the blank.
A number that is a multiple of two or more numbers is
called a ________________.
ANSWER:
A number that is a multiple of two or more numbers is called a common multiple.
Fill in the blank.
The ____________ states that every natural number is either prime or can be uniquely written as a product of primes.
ANSWER:
The Fundamental Theorem of Arithmetic states that every natural number is either prime or can be uniquely written as a product of primes.
The sentences below, illustrates which properties?
5 x (9 x 1) = 5 x (1 x 9)
(6 x 7) x 2 = 6 x (7 x 2)
ANSWER:
Commutative:5 x (9 x 1) = 5 x (1 x 9)
Associative:(6 x 7) x 2 = 6 x (7 x 2)
What are Relatively Prime Numbers?
Relatively Prime Numbers are two numbers which do not have any common factors other than 1.
ANSWER: