Definition of GCF
Greatest common factor commonly known as GCF of the two numbers is the highest possible number which completely divides given numbers, i.e. without leaving any remainder. It is represented as GCF (400, 298).
Properties of GCF
- The GCF of two or more given numbers cannot be greater than any of the given number. Eg- GCF of 400 and 298 is 2, where 2 is less than both 400 and 298.
- GCF of two consecutive numbers is always 1.
- The product of GCF and LCM of two given numbers is equal to the product of two numbers.
- The GCF of two given numbers where one of them is a prime number is either 1 or the number itself.
What are factors?
In mathematics, a factor is that number which divides into another number exactly, without leaving a remainder. A factor of a number can be positive or negative.
Properties of Factors
- Each number is a factor of itself. Eg. 400 and 298 are factors of themselves respectively.
- 1 is a factor of every number. Eg. 1 is a factor of 400 and also of 298.
- Every number is a factor of zero (0), since 400 x 0 = 0 and 298 x 0 = 0.
- Every number other than 1 has at least two factors, namely the number itself and 1.
- Every factor of a number is an exact divisor of that number, example 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400 are exact divisors of 400 and 1, 2, 149, 298 are exact divisors of 298.
- Factors of 400 are 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400. Each factor divides 400 without leaving a remainder.
Simlarly, factors of 298 are 1, 2, 149, 298. Each factor divides 298 without leaving a remainder. - Every factor of a number is less than or equal to the number, eg. 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400 are all less than or equal to 400 and 1, 2, 149, 298 are all less than or equal to 298.
Steps to find Factors of 400 and 298
- Step 1. Find all the numbers that would divide 400 and 298 without leaving any remainder. Starting with the number 1 upto 200 (half of 400) and 1 upto 149 (half of 298). The number 1 and the number itself are always factors of the given number.
400 ÷ 1 : Remainder = 0
298 ÷ 1 : Remainder = 0
400 ÷ 2 : Remainder = 0
298 ÷ 2 : Remainder = 0
400 ÷ 4 : Remainder = 0
298 ÷ 149 : Remainder = 0
400 ÷ 5 : Remainder = 0
298 ÷ 298 : Remainder = 0
400 ÷ 100 : Remainder = 0
400 ÷ 200 : Remainder = 0
400 ÷ 400 : Remainder = 0
Hence, Factors of
400 are 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, and 400
And, Factors of
298 are 1, 2, 149, and 298
Examples of GCF
Sammy baked 400 chocolate cookies and 298 fruit and nut cookies to package in plastic containers for her friends at college. She wants to divide the cookies into identical boxes so that each box has the same number of each kind of cookies. She wishes that each box should have greatest number of cookies possible, how many plastic boxes does she need?Since Sammy wants to pack greatest number of cookies possible. So for calculating total number of boxes required we need to calculate the GCF of 400 and 298.
GCF of 400 and 298 is 2.
A class has 400 boys and 298 girls. A choir teacher wants to form a choir team from this class such that the students are standing in equal rows also girls or boys will be in each row. Teacher wants to know the greatest number of students that could be in each row, can you help him?To find the greatest number of students that could be in each row, we need to find the GCF of 400 and 298. Hence, GCF of 400 and 298 is 2.
What is the difference between GCF and LCM?Major and simple difference betwen GCF and LCM is that GCF gives you the greatest common factor while LCM finds out the least common factor possible for the given numbers.
What is the relation between LCM and GCF (Greatest Common Factor)?GCF and LCM of two numbers can be related as GCF(400, 298) = ( 400 * 298 ) / LCM(400, 298) = 2.
What is the GCF of 400 and 298?GCF of 400 and 298 is 2.
Mary has 400 blue buttons and 298 white buttons. She wants to place them in identical groups without any buttons left, in the greatest way possible. Can you help Mary arranging them in groups?Greatest possible way in which Mary can arrange them in groups would be GCF of 400 and 298. Hence, the GCF of 400 and 298 or the greatest arrangement is 2.
Kamal is making identical balloon arrangements for a party. He has 400 maroon balloons, and 298 orange balloons. He wants each arrangement tohave the same number of each color. What is the greatest number of arrangements that he can make if every balloon is used?The greatest number of arrangements that he can make if every balloon is used would be equal to GCF of 400 and 298. So the GCF of 400 and 298 is 2.
Kunal is making baskets full of nuts and dried fruits. He has 400 bags of nuts and 298 bags of dried fruits. He wants each basket to be identical, containing the same combination of bags of nuts and bags of driesn fruits, with no left overs. What is the greatest number of baskets that Kunal can make?the greatest number of baskets that Kunal can make would be equal to GCF of 400 and 298. So the GCF of 400 and 298 is 2.
To energize public transportation, Abir needs to give a few companions envelopes with transport tickets, and metro tickets in them. On the off chance that he has 400 bus tickets and 298 metro tickets to be parted similarly among the envelopes, and he need no tickets left. What is the greatest number of envelopes Abir can make?To make the greatest number of envelopes Abir needs to find out the GCF of 400 and 298. Hence, GCF of 400 and 298 is 2.