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**Entering Numerical Expressions and Fractions**

These questions ask for numerical answers that are not whole or decimal numbers.

There are two ways to enter these types of answers:

- Enter using calculator-style notation (see below)
- After clicking in the answer box, click the yellow arrow that shows to the right of it to use the equation editor

Enter | To get |
---|---|

2/5 | `2/5` |

sqrt(3) | `sqrt(3)` |

5*10^6 | `5*10^6` |

Many students find it easier to use the equation editor. Watch this video to see how to use it.

In some cases, you can give a decimal approximation instead of an exact answer, but be sure to check the directions first.

Try it here. Use the Preview button to see how the computer is interpreting what you typed. If you see

**syntax error**, check to make sure you're using the right format.

A) Enter the expression `sqrt(5)`

Your input:

B) Enter the expression `5/8`

Your input:

Notice that when you click on the answer box, it says below the box to enter a reduced fraction answer. This question will only accept fractions, not decimal answers.

C) Enter the expression `5 * 10^5`

Your input:

Notice that when you click on the answer box, it says below the box to enter the answer in scientific notation. This question will not accept the standard form of the number.

Box 1: Enter your answer as a number (like 5, -3, 2.2172) or as a calculation (like 5/3, 2^3, 5+4)

Enter DNE for Does Not Exist, oo for Infinity

`sqrt(5)`

Box 2: Enter your answer as a reduced fraction (like 5/3, not 10/6) or as an integer (like 4 or -2)

Do not enter mixed numbers

Enter DNE for Does Not Exist, oo for Infinity

`5/8`

Box 3: Enter your answer as in scientific notation. Example: 3*10^2 = 3 · 10^{2}

Enter DNE for Does Not Exist, oo for Infinity

`5*10^5`