Question

How do you evaluate the following expression using decimals?: `4.56 - 4/5 + 3.21 + 17/32`

Answer 1

`4.56-4/5+3.21+17/32=7.47125`

Explanation:

The best way is to convert each fraction to decimal form. Two of them are already in decimal form. `4/5=(4xx2)/(5xx2)=8/10=0.8` and `17/32=(17xx3125)/(32xx3125)=50125/100000=0.50125`.

Hence, the expression becomes `4.56-0.8+3.21+0.50125=7.47125`