Incrementation by Three

PART 1 of 2

STEP 1

Just count the numbers on the cycle, e.g. 0-3-6-9-2-5-8-1-4-7-0-3-6-9-2- etc. Know this by heart before you do step 2.

STEP 2

Do first as beginner, then migrate to slow, then medium, and then fast. Keep up in counting along with the graphic progression.
Remember, 0 means any number that ends in a zero, like 10, or 40 , or 2430.

Good luck!

Other Ways of Doing Step 2

Here are three different speeds to address the same rote mastery: Narrow your browser window to focus on just one and start the counting from any number, e.g. with the zero in focus, you can start from ), or 10, or 40, or 50, or 160, etc.

SLOW

MEDIUM

FAST

Step 2 - Guess Third Number

SLOW

MEDIUM

FAST

Step 2 - Guess Second Number

With only 2 characters, say the number before it appears.

SLOW

MEDIUM

FAST

To test yourself, pick a random number, and increment by three for the distance of a 100, e.g. if you start at 41, go till about 141.