Saturday, 26th of January 2008 (26-01-2008)

Math Trainer

Version 3. Flash Program made with ActionScript 2.

Play it!

Speed Math Trainer can be played embedded in html or from the swf source.

Full Screen:

Beta Version of New Math RPG

This is currently in early development. I'm not sure if this will be open source as well.

Speed Math RPG - 777kb

Video Tutorial

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Direct Link:

Download Video: FLV help ] Embed Code:Direct Link: http://youtube.com/watch?v=tNRL5h9tTNM&rel=1 Download Video: FLV Format

This Program is Open Source

Please retain all links and the name Jimmy Ruska in the program.

Translated Into Bulgarian by Math10.com

Must have flash

You must download flash 8 to use this program.

Download Speed Math Trainer

You can download it to your desktop:

Google Videos

Forgive the lack of effect in my voice, the screen capture thing and video uploader was being annoying so I had to make/upload the video several times.

More speed math tutorials?

If I see people are watching my videos through the statistics google offers I'll add more tutorials like 3 or 4 digit multiplication.

I have a bug to report!

Go to the bottom of this page and use the comment box.

I have a comment or Suggestion

Go to the bottom of this page and use the comment box.

Older Version

Right click and save as to put on your desktop.

Manual

Getting Started

Click on one of the addition or multiplication text title's. It'll make the intro disappear. From there it says "Type 1 to Start".

Options

Automiss Off/On:

Restart Level:

Hide Time:

Hide Meter:

Savestar On/Off:

Quick Keys

Will automatically count the question as missed once your time expires. This is the only reason for having missed in the stats.Restarts the level.Hide the timer below the submit box.Hide the moving blue bar under the submit box.Your stars reflect your best time only. If off, your stars will be reevaluated per turn.The arrows near the slowest and best time are to move slowest, best, and record times down or up. The Q is to organize by questions so you can check if you started slowing down or speeding up, and by how much.

Clicking "e" in the submit box will restart the level and start the timer.

Mental Math Tricks

Links

Arthur Benjamin Math Tricks on Youtube

I got these links from Grey Matters Mental Gym which Featured this page in an article. Thanks Scott!

Speed addition

To add rapidly start from left to right.

Speed Multiplication



Double Digits

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Speed Math Tricks

Step 1: Add the first two numbers.Step 2: Glance if the next pair of numbers is greater than one, if it is, add one to the first pair, and write the remainder for the second pair. If it's less than zero just add straight downStep 3: Repeat step 2 until you run out of numbers.Step 1: Multiply the first two numbers together.Step 2: Cross multiply and add the Sums.Step 3: Multiply the last two digits.Step 4: Add the sums of each step.

The following tips are taken from the book "Rapid Math Tricks and Tips" (c) 1992 by Edward H. Julius. The tips themselves are public domain and the author's direct explanation or examples are not used. This is not the full list of tricks. Mistakes listed here do not reflect the author of the book.

Multiply by .4, 4,40,400 etc

Simply double the number twice and adjust the decimal, because 2x2=4

Multiply by .8, 8, 80, 800 etc

Double it three times, because 8 is 2 x 2 x 2

Multiply by .5, 5, 50, 500 etc

Divide by two and adjust decimals, because 5=10/2

Square two digit numbers ending in 5

Multiply the tens digit by a whole number, then attach 25 to the end.

Multiply two digit numbers by .11, 11, 110, etc

Add the two digits your multiplying by 11 together and put their sum in the middle of the same two digits. 12*11=?, 1+2=3,solution 132

Multiply by .25,25,250, etc

Divide by four, and adjust the decimal. Because 2.5=10/4.

Divide by .25,25,250, etc

Multiply times 4 and adjust the decimal.

Multiply a one or two digit number by .99,99,990

Substract the number by one and call it value 1, then substract the number from 100 and call it value 2. Put the two values together.

Multiply a two digit number times .101,101,1010

Write the number twice and adjust the decimal. 64*101=6464

Rapidly Multiply .125,1.25 12.5 etc

Divide by 8, adjust decimals. Because 5/4 or (10/8) is 1.25.

Rapidly Divide .125,1.25 12.5 etc

Multiply 8, adjust decimals. Because 5/4 or (10/8) is 1.25.

Multiply by .9, 90, 900 etc

Multiply the value your multiplying times nine, time 10 instead. Take that solution and substract the value your multiplying times nine from it. 9 x 21, we say 10 x 21 =210-21=answer.

Rapidly Multiply by .12, 1.2, 12, 120 etc

Multiply times 10 and call it value 1, multiply times 2 and call it value 2. Add the solutions. 12 * 60= (10x60)600+(60*2)120

Multiply by 15

Multiply by 10 and get value 1, divide by 2 then multiply by 10 and get value two. 15*34 = (10x34)340+((34/2)*10)170

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