Chapter 1, Problem 1QC

To determine

The evaluate: $5.8+4.2$

Answer to Problem 1QC

  $10.0$

Explanation of Solution

Given information:

  $5.8+4.2$

Calculation:

Here we are given with $+$ operator, so we must perform addition for the given numbers.

The addition operation has been performed below for the given numbers-

  $\underset{\_}{\begin{array}{l}\underset{\_}{\begin{array}{l}5.8\\ +4.2\end{array}}\\ 10.0\end{array}}$

First, we will add numbers after the decimal basis their position, adding 8 and 2 will result in 10, we will keep number at one’s place and will carry forward the number at ten’s position.

Here we have kept 0 and carry forward 1, now adding 5, 4 and carry forwarded 1 will yield 10.

So, the final answer is $10.0$