Arithmetic Grade Four

Lesson One hundred and eighteen: Mixed to Decimals

Adding mixed numbers is sometimes easier if you convert them to decimals first. Consider the following examples: 


       2  2/5 + 1  1/2  =  2.4 + 1.5 = 3.9

       2  3/10 + 3  1/5 =  2.3 + 3.2 = 5.5
If you really wanted to you could find equivalent fractions and then convert your fraction answer to a decimal like this: 

       2  2/5 + 1  1/2  =  2  4/10  +  1  5/10  =  3  9/10  = 3.9

       2  3/10 + 3  1/5 =  2  3/10  +  3  2/10  =  5  5/10  =  5.5
This requires an extra step, but it still gets you the same answer.

Now you get to try a few for yourself.

Click here to go to next page