Exercises

Add up the following decimal fractions

%%0.44+0.234%%

%%0.44+0.234\\%%

Write the figures one below the other. Make sure that the decimal marks are directly underneath each other. Fill up the shorter number with zeros.

%%\begin{array}{l} \hphantom{ +\; } 0.440\\ {+\;0.234}\\ \\ \end{array}%%

Use written addition. Write the decimal mark of the solution directly underneath the other ones.

%%\begin{array}{l} \hphantom{ +\; } 0.440\\ \underline{+\;0.234}\\ \hphantom{ +\; }0.674 \end{array}%%

%%2.983+0.230%%

%%2.983 + 0.23%%

Write the figures one below the other. Make sure that the decimal marks are directly underneath each other. Fill up the shorter number with zeros.

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

Use written addition. Write the decimal mark of the solution directly underneath the other ones.

%%\begin{array}{l} \hphantom{ +\; } 2\hphantom{_1}.9\hphantom{_1}8\hphantom{_1}3\\ \underline{+\;0_1.2_13\hphantom{_1}0}\\ \hphantom{ +\; }3\hphantom{_1}.2\hphantom{_1}1\hphantom{_1}3 \end{array}%%

%%0.00034 + 0.032%%

%%0.00034 + 0.032%%

Write the figures one below the other. Make sure that the decimal marks are directly underneath each other. Fill up the shorter number with zeros.

%%\begin{array}{l} \hphantom{ +\; }0.00034\\ {+\;0.032\hphantom{34}}\\ \end{array}%%

Use written addition. Write the decimal mark of the solution directly underneath the other ones.

%%\begin{array}{l} \hphantom{ +\; }0,00034\\ \underline{+\;0,032\hphantom{34}}\\ \hphantom{ +\; }0,03234 \end{array}%%

%%0.983 + 2.78 + 11.673%%

%%0.983 + 2.78 + 11.673%%

Write the figures one below the other. Make sure that the decimal marks are directly underneath each other. Fill up the shorter number with zeros.

%%\begin{array}{l} \hphantom{ +\;1 }0\hphantom{_2}.9\hphantom{_2}8\hphantom{_2}3\\ \hphantom{ +\;1 }2\hphantom{_2}.7\hphantom{_2}8\hphantom{_2}0\\ +\;11 \hphantom{_1}.6\hphantom{_1}7\hphantom{_2}3\\ \\ \end{array}%%

Use written addition. Write the decimal mark of the solution directly underneath the other ones.

%%\begin{array}{l} \hphantom{ +\;1 }0\hphantom{_2}.9\hphantom{_2}8\hphantom{_2}3\\ \hphantom{ +\;1 }2\hphantom{_2}.7\hphantom{_2}8\hphantom{_1}0\\ \underline{+\;11_{2}.6_{2}7\hphantom{_2}3}\\ \hphantom{ +\; }15\hphantom{_2}.4\hphantom{_2}3\hphantom{_2}6 \end{array}%%

%%2.3+3. 2%%

$$2.3+3.2\\$$

Write the figures one below the other. Make sure that the decimal marks are directly underneath each other.

%%\begin{array}{l} \hphantom{ +\; }2.3\\ +\;3.2\\ \\ \end{array}%%

Use written addition. Write the decimal mark of the solution directly underneath the other ones.

%%\begin{array}{l} \hphantom{ +\; }2.3\\ \underline{+\;3.2}\\ \hphantom{ +\; }5.5 \end{array}%%

%%22+7.535+0.093%%

$$22+7.535+0.093\\$$

Write the figures one below the other. Make sure that the decimal marks are directly underneath each other. Fill up the missing decimal places of the %%22%% with zeros.

%%\begin{array}{l} \hphantom{ +\; }22.0\hphantom{_1}0\hphantom{_1}0\\ \hphantom{ +\;2 }7.5\hphantom{_1}3\hphantom{_1}5\\ +\;\hphantom{2}0.0\hphantom{_1}9\hphantom{_1}3\\ \\ \end{array}%%

Use written addition. Write the decimal mark of the solution directly underneath the other ones.

%%\begin{array}{l} \hphantom{ +\; }22.0\hphantom{_1}0\hphantom{_1}0\\ \hphantom{ +\;2 }7.5\hphantom{_1}3\hphantom{_1}5\\ \underline{+\;\hphantom{2}0.0_{1}9\hphantom{_1}3}\\ \hphantom{ +\; }29.6\hphantom{_1}2\hphantom{_1}8 \end{array}%%

Subtract the following decimal fractions:

%%0.45-0.29%%

%%0.45-0.29\\%%

Write the figures one below the other. Make sure that the decimal marks are directly underneath each other.

%%\begin{array}{l} \hphantom{ -\; }0.4\;5\\ -\;0.2\;9\\ \\ \end{array}%%

Subtract the numbers. Write the decimal mark of the solution directly underneath the other ones.

%%\begin{array}{l} \hphantom{ -\; }0.\overset{3}{\not4}\overset{15}{\not5}\\ \underline{-\;0.2\;9}\\ \hphantom{ -\; }0.1\;6 \end{array}%%

%%0.965-0.83%%

%%0.965-0.83\\%%

Write the figures one below the other. Make sure that the decimal marks are directly underneath each other. Fill up the shorter number with zeros.

%%\begin{array}{l} \hphantom{ -\; }0.965\\ -\;0.830\\ \\ \end{array}%%

Subtract the numbers. Write the decimal mark of the solution directly underneath the other ones.

%%\begin{array}{l} \hphantom{ -\; }0.965\\ \underline{-\;0.830}\\ \hphantom{ -\; }0.135 \end{array}%%

%%1.782-0.234%%

%%1.782-0.234\\%%

Write the figures one below the other. Make sure that the decimal marks are directly underneath each other.

%%\begin{array}{l} \hphantom{ -\; }1.7\;8\;2\\ -\;0.2\;3\;4\\ \\ \end{array}%%

Subtract the numbers. Write the decimal mark of the solution directly underneath the other ones.

%%\begin{array}{l} \hphantom{ -\; }1.7\overset{7}{\not8}\overset{12}{\not2}\\ \underline{-\;0.2\;3\;4}\\ \hphantom{ -\; }1.5\;4\;8 \end{array}%%

%%34.98-1.061%%

%%34.98-1.061\\%%

Write the figures one below the other. Make sure that the decimal marks are directly underneath each other. Fill up the shorter number with zeros.

%%\begin{array}{l} \hphantom{ -\; }3\;4.9\;8\;0\\ -\;\hphantom{3\;}1.0\;6\;1\\ \\ \end{array}%%

Subtract the numbers. Write the decimal mark of the solution directly underneath the other ones.

%%\begin{array}{l} \hphantom{ -\; }3\;4.9\overset{7}{\not8}\overset{10}{\not0}\\ \underline{-\;\hphantom{3\;}1.0\;6\;1}\\ \hphantom{ -\; }3\;3.9\;1\;9 \end{array}%%

%%4.913-2.911%%

%%4.913-2.911\\%%

Write the figures one below the other. Make sure that the decimal marks are directly underneath each other.

%%\begin{array}{l} \hphantom{ -\; }4.913\\ -\;2.911\\ \\ \end{array}%%

Subtract the numbers. Write the decimal mark of the solution directly underneath the other ones.

%%\begin{array}{l} \hphantom{ -\; }4.913\\ \underline{-\;2.911}\\ \hphantom{ -\; }2.002 \end{array}%%

%%2.043-1.921%%

%%2.043-1.921\\%%

Write the figures one below the other. Make sure that the decimal marks are directly underneath each other.

%%\begin{array}{l} \hphantom{ -\; }2.\;043\\ -\;1.\;921\\ \\ \end{array}%%

Subtract the numbers. Write the decimal mark of the solution directly underneath the other ones.

%%\begin{array}{l} \hphantom{ - }\overset{1}{\not2}.\overset{10}{\not0}43\\ \underline{-\;1.\;921}\\ \hphantom{ -\; }0.\,122 \end{array}%%

%%11.693-7.777% %%

%%11.693-7.777\\% %%

Write the figures one below the other. Make sure that the decimal marks are directly underneath each other.

%%\begin{array}{l} \hphantom{-}11.693\\ -\hphantom{1}7.777\\ \\ \end{array}%%

Subtract the numbers. Write the decimal mark of the solution directly underneath the other ones.

%%\begin{array}{l} \hphantom{ -\ }\not1\overset{\overset{10}{\not0}}{\not1}.\overset{16}{\not6}\overset{8}{\not9}\overset{13}{\not3}\\ \underline{-\;\hphantom{\not10}7.\;7\;7\;7}\\ \hphantom{ -\; }\hphantom{\not10}3.\;9\;1\;6 \end{array}%%

Discuss Comments