Showing posts with label addition and subtraction. Show all posts
Showing posts with label addition and subtraction. Show all posts

Monday, June 28, 2010

Fractions Problems on Addition and Subtraction

Before we read about Fractions Problems on Addition and Subtraction... Let me help you understand what is all about Fractions and how is it connected to Addition and Subtraction.

What is Fraction: -
A fraction is a number that is the portion or part of a whole. Key to understanding fractions is understanding how to represent part of the whole. Sometimes the whole will be a pizza, a measuring cup, a bar and it is important to understand what the part is each time the whole is different.
When starting with fractions, begin by focusing on 1/2 and the 1/4 before moving into equivalent fractions and using the 4 operations with fractions (adding, subtracting, multiplying and dividing)

Let me also show you one example on fractions problems on addition and subtraction.

Question -
Multiply the fractions and and reduce the final answer if possible

Solution:-

Given we need to multiply the fractions and 70/5 and 30/5
Fractions can be multiplied using this formula a.c/b.d
Here a = 70, b = 5, c= 30, d= 5.

= a.c/b.d
= 70.30/5.5 by solving it we get
= 2100/25
It can be reduced further as

= 84