## Pre-Algebra Tutorial

#### Intro

Teacher Proficiency/Basic Math Skills

In this exercise you are going to memorize and workout decimal, fraction, percent problems. They are all basically long division problems.

#### Sample Problem

1. Take a piece of paper,not your keyboard,and write out these conversions three times in a row. Memorize these common conversions, because pre-algebra is full of them.

2. The conversions in number one won’t always be written this way. That’s why you also have to know how to work them out.

#### Solution

```1.  Fraction   Decimal     Percent
1/100       .01         1%

1/10        .10        10%

1/4         .25        25%

1/3         .33        33%

5/10        .50        50%

3/4         .75        75%

1/1         1.0       100%
```

2. Students can’t memorize all fractions, so let’s see how to convert them.Long division solves every fraction conversion problem.

``` Fraction       Decimal    Percent

1/16 =
1 divided by 16  .0625

Move the decimal point
back two spaces             6.25%

864/100 =
864 divided by 100   .864

Move the decimal point
back two spaces             86.4%
```

Use a calculator to check your long division.

Next tutorial, we are going to work more on percent word problems.