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GED Practice,[object Object],Divisibility Rules,[object Object],The divisibility rules make math easier. Did you ever wonder how people could tell if something was divisible by a number just by looking at it? ,[object Object],Divisibility Rules will help you be more awesome and it will make reducing fractions much easier.,[object Object]

Three,[object Object],A number is divisible by three if the sum of the digits adds up to a multiple of three.,[object Object],Example,[object Object],423 is divisible by three because 4 + 2 + 3 = 9.,[object Object],Since 9 is a multiple of three, or is divisible by three, then 423 is divisible by three.,[object Object]

Four,[object Object],A number formed by the two rightmost digits is divisible by 4.,[object Object],Example,[object Object],128 is divisible by four because 28 is evenly divisibly by 4.,[object Object]

Check,[object Object],Which numbers are evenly divisible by three?,[object Object],468,[object Object],725,[object Object],65232,[object Object],8864233,[object Object]

Check,[object Object],Which numbers are evenly divisible by four?,[object Object],3162,[object Object],2588,[object Object],120457812,[object Object],67828,[object Object]

Word Problems,[object Object],Word problems often scare people, but they should not.,[object Object],There is no secret to solving, just strategy.,[object Object]

Strategy,[object Object],1. Understand the question.,[object Object],2. Decide what information you need to answer the question.,[object Object],3. Choose the arithmetic operation(s).,[object Object],4. Solve the problem and check your work.,[object Object],5. Make sure that you answered the question and that your answer makes sense.,[object Object]

Example,[object Object],Laura works at a part-time job 20 hours a week. She makes $9 an hour. How much money does she make a year from this job?,[object Object],Step 1: Question: How much money does she make a year from this job?,[object Object],Step 2: Info: 20 hours/week, $9/ hour, 52 weeks a year,[object Object],Step 3: Arithmetic: multiply,[object Object],Step 4: Solve: 20 hours x $9 an hour x 52 weeks a year,[object Object],Step 5: Make sense? $9360,[object Object]

Homework,[object Object],Take out your HW and do the following to review these steps:,[object Object],Underline the question,[object Object],Circle key words,[object Object],Box important information,[object Object],Draw the arithmetic signs next to the problem,[object Object],Check your answer- Does it make sense?,[object Object]

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