Addition and Subtraction

$\blacktriangleright$ To add 3, 6 and 14

1.
To put the insertion point in mathematics mode, do one of the following

- or -

- or


2.
Type 3 + 6 + 14 (This sum should appear red on your screen.)

3.
Leaving the insertion point in the expression 3 + 6 + 14, do one of the following:

This sequence prompts Scientific Notebook to insert = 23 to the right of the 3 + 6 + 14, resulting in the equation 3 + 6 + 14 = 23.

By following the same procedure, you can carry out the following operations and perform a vast variety of other mathematical computations.

Note    The mathematical contents of gray boxes display the mathematical expressions you enter, together with the results of the indicated operation. In general, throughout this document, the mathematical contents of gray boxes display both the input for an action and the results.

$\blacktriangleright$ With the insertion point in the sum (or difference) choose Evaluate

235 + 813 = 1048 6pt

${\dfrac{{2}}{{3}}}$ + ${\dfrac{{1}}{{7}}}$ =  ${\dfrac{{17}}{{21}}}$ 6pt

96 - 27 =  69 6pt

${\dfrac{{2}}{{3}}}$ - ${\dfrac{{8}}{{7}}}$ =   - ${\dfrac{{10}}{{21}}}$ 6pt

34 + 162 - ${\dfrac{{25}}{{4}}}$ + ${\dfrac{{13}}{{7}}}$ -29 = ${\dfrac{{4553}}{{28}}}$