Showing posts with label mixed. Show all posts
Showing posts with label mixed. Show all posts

Sunday, 27 January 2013

subtracting fractions

1.SUBTRACTING WITH LIKE DENOMINATORS
You just subtract the numerators together.
EX.4/5-1/5=3/5

2.SUBTRACTING WITH UNLIKE DENOMINATORS
You have to find the lowest common denominator for both denominators in the the times tables. You have to multiply the the numerator by how much you multiplied the denominator.
EX.5/6-4/8
6x4=24 5x4=20
8x3=24 4x3=12              
20/24-12/24=8/24

3.SUBTRACTING MIXED WITH LIKE DENOMINATORS
subtract the numerator then the whole numbers 
EX.4/5-2 1/5
4-1= 3
4-2=2
so 4 4/5-2 1/5= 2 3/5

4.SUBTRACTING MIXED WITH UNLIKE DENOMINATORS
You have to find the lowest common denominator for both denominators in the the times tables. You have to multiply the the numerator by how much you multiplied the denominator. subtract the numerator then the whole number.
EX.2 1/2-1 2/4
2x2=4 1x2=2
4x1=4 2x1=2 
2-2=0
2-1=1
1/2-1 2/4=1

Friday, 25 January 2013

Mixed and Improper Fraction

Here are the steps to convert improper fractions to a mixed fraction:
E.g. 9/4
1) See how many times can 4 go into 9. 4 can go into 9 2 times.
2)4x2=8. 8 is still not enough so you check how many is left when you deduct 9 to 8.
3) It equals 1. 1 becomes your numerator and 2 becomes your whole number
4) Keep the same denominator which is 4
5) The answer is 2 and 1/4

Here are the steps to convert mixed fractions to improper fraction:
E.g. 5 and 3/4
1) Multiply the denominator to the whole number. 4x5=20
2) 20+ the numerator. 20+3=23
3) Keep the same denominator.
4) Your final answer is 23/4