Exercises: addition and subtraction of decimal numbers

Write both numbers underneath each other, and fill up the "shorter number" ($0.44$) with zeros.

Write both numbers underneath each other, and fill up the "shorter number" ($0.23$) with zeros.

$\begin{array}{l}\phantom{+}2\phantom{{}_1}.9\phantom{{}_1}8\phantom{{}_1}3\\ +0\phantom{{}_1}.2\phantom{{}_1}3\phantom{{}_1}0\end{array}$

Now, perform an addition in columns.

$\begin{array}{l}\phantom{+}2\phantom{{}_1}.9\phantom{{}_1}8\phantom{{}_1}3\\ \underline{+0_1{.2}_{1}3\phantom{{}_1}0}\\ \phantom{+}3\phantom{{}_1}.2\phantom{{}_1}1\phantom{{}_1}3\end{array}$

Write both numbers underneath each other, and fill up the "shorter number" ($0.23$) with zeros.

Write both numbers underneath each other, and fill up the "shorter number" ($0.032$) with zeros.

Write both numbers underneath each other, and fill up the $2.78$ with zeros.