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 (240, 400).
Properties of GCF
- The GCF of two or more given numbers cannot be greater than any of the given number. Eg- GCF of 240 and 400 is 80, where 80 is less than both 240 and 400.
- 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. 240 and 400 are factors of themselves respectively.
- 1 is a factor of every number. Eg. 1 is a factor of 240 and also of 400.
- Every number is a factor of zero (0), since 240 x 0 = 0 and 400 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, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240 are exact divisors of 240 and 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400 are exact divisors of 400.
- Factors of 240 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240. Each factor divides 240 without leaving a remainder.
Simlarly, 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. - Every factor of a number is less than or equal to the number, eg. 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240 are all less than or equal to 240 and 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400 are all less than or equal to 400.
Steps to find Factors of 240 and 400
- Step 1. Find all the numbers that would divide 240 and 400 without leaving any remainder. Starting with the number 1 upto 120 (half of 240) and 1 upto 200 (half of 400). The number 1 and the number itself are always factors of the given number.
240 ÷ 1 : Remainder = 0
400 ÷ 1 : Remainder = 0
240 ÷ 2 : Remainder = 0
400 ÷ 2 : Remainder = 0
240 ÷ 3 : Remainder = 0
400 ÷ 4 : Remainder = 0
240 ÷ 4 : Remainder = 0
400 ÷ 5 : Remainder = 0
240 ÷ 5 : Remainder = 0
400 ÷ 8 : Remainder = 0
240 ÷ 6 : Remainder = 0
400 ÷ 10 : Remainder = 0
240 ÷ 8 : Remainder = 0
400 ÷ 16 : Remainder = 0
240 ÷ 10 : Remainder = 0
400 ÷ 20 : Remainder = 0
240 ÷ 12 : Remainder = 0
400 ÷ 25 : Remainder = 0
240 ÷ 15 : Remainder = 0
400 ÷ 40 : Remainder = 0
240 ÷ 16 : Remainder = 0
400 ÷ 50 : Remainder = 0
240 ÷ 20 : Remainder = 0
400 ÷ 80 : Remainder = 0
240 ÷ 24 : Remainder = 0
400 ÷ 100 : Remainder = 0
240 ÷ 30 : Remainder = 0
400 ÷ 200 : Remainder = 0
240 ÷ 40 : Remainder = 0
400 ÷ 400 : Remainder = 0
240 ÷ 120 : Remainder = 0
240 ÷ 240 : Remainder = 0
Hence, Factors of
240 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, and 240
And, Factors of
400 are 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, and 400
Examples of GCF
What is the relation between LCM and GCF (Greatest Common Factor)?GCF and LCM of two numbers can be related as GCF(240, 400) = ( 240 * 400 ) / LCM(240, 400) = 80.
What is the GCF of 240 and 400?GCF of 240 and 400 is 80.
Ram has 240 cans of Pepsi and 400 cans of Coca Cola. He wants to create identical refreshment tables that will be organized in his house warming party. He also doesn't want to have any can left over. What is the greatest number of tables that Ram can arrange?To find the greatest number of tables that Ram can stock we need to find the GCF of 240 and 400. Hence GCF of 240 and 400 is 80. So the number of tables that can be arranged is 80.
Rubel is creating individual servings of starters for her birthday party. He has 240 pizzas and 400 hamburgers. He wants each serving to be identical, with no left overs. Can you help Rubel in arranging the same in greatest possible way?The greatest number of servings Rubel can create would be equal to the GCF of 240 and 400. Thus GCF of 240 and 400 is 80.
Ariel is making ready to eat meals to share with friends. She has 240 bottles of water and 400 cans of food, which she would like to distribute equally, with no left overs. What is the greatest number of boxes Ariel can make?The greatest number of boxes Ariel can make would be equal to GCF of 240 and 400. So the GCF of 240 and 400 is 80.
Mary has 240 blue buttons and 400 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 240 and 400. Hence, the GCF of 240 and 400 or the greatest arrangement is 80.
Kamal is making identical balloon arrangements for a party. He has 240 maroon balloons, and 400 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 240 and 400. So the GCF of 240 and 400 is 80.
Kunal is making baskets full of nuts and dried fruits. He has 240 bags of nuts and 400 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 240 and 400. So the GCF of 240 and 400 is 80.
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 240 bus tickets and 400 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 240 and 400. Hence, GCF of 240 and 400 is 80.