## Pre-Algebra Tutorial

*Decimals, Fractions, Percents*

#### 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.

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