Addition vs Multiplication Rule :-
[A x n = A + A + A + … n times ]
This strategy basically designed for child student or those students who are facing problem in multiplication but they are proficient at addition. if you are not understand how to multiplication work ? No worried about it. Here you can learn and understand multiplication with the help of addition. so. enjoy this article..
The idea behind Multiplying vs Addition is quite simple; help students learn multiplication strategies that can help them solve problems far beyond the typical “12 x 12″ operation.
By learning and memorizing strategies, a student will possess a tool that is far greater than the standard multiplication algorithm.
Here are some examples:
Track numbers 2, 3, and 4 from Multiplying Time! teach doubling strategies. Track number 2 addresses multiplying by 2. When multiplying anything by 2, the answer is as simple as doubling.
As an example, 8 x 2 = ?.
8 doubled, or 8 + 8, equals 16.
The same strategy enables a student to solve 37 x 2, or 37 + 37, which equals 74. (This of course presumes that the student is proficient at addition).
Track number 3 addresses multiplication by 4. When multiplying by 4, the answer is as simple as the double-double strategy. As an example, 8 x 4, is just like saying, 8 + 8 = 16 (double), then 16 doubled, or 16 + 16 = 32.
Take that a step further for multiplying by 8 using a double-double-double strategy. Staying with the number 8, you’d say 8 doubled, or 8 + 8 = 16, then 16 doubled, or 16 + 16 = 32, then 32 doubled, or 32 + 32 = 64.
Hopefully this gives you an idea of how utilizing a strategy is better than memorizing an algorithm.
Using the double-double-double strategy, what is 37 x 8?