Question

Simplify :

$18.09+17.55-31.432$

Answer 1

Step 1 : Convert the decimals into like decimals as :

$$\begin{gathered} 18.09=18.090 \\ 17.55=17.550 \\ 31.432=31.432 \end{gathered}$$

Step 2: Simplify the given decimals as :

$$\begin{gathered} \Rightarrow 18.090+17.550-31.432 \\ \Rightarrow 35.640-31.432 \\ \Rightarrow 4.208 \end{gathered}$$

Thus, the answer is $4.208$ .