I'm Dis1510, AMA (Ask Me Anything) & SAA [Sensible And Answerable]

Up to 15x15 is still good. Try not to forget too much of it. As long as remember up to 12X12 is good enough and just also know certain other ones like 13x13=169, 14x14=196, 15x15=225, 16x16=256.

So here is a question for you. Those last four products shown above, what is the difference between each of them as you go from left to right?

DIS510.....i am doing this right at your level. Do not be scared away!

look at 13x13=169, 14x14=196, 15x15=225, 16x16=256

Now focus only at the 169, 196, 225, 256

what is the difference between each of these numbers (as move from left to right)?

Let's do this from the beginning.

1x1=1  2x2=4  3x3=9  4x4=16 5x5=?

look at the pattern: the successive differences are: 3,5,7

(4-1=3,  9-4=5,  16-9=7)

So the next number would be 9, right?

so if you didn't know 5x5 it would be 16+9=25!!!

u see?

DIS510.....i am doing this right at your level. Do not be scared away!

look at 13x13=169, 14x14=196, 15x15=225, 16x16=256

Now focus only at the 169, 196, 225, 256

what is the difference between each of these numbers (as move from left to right)?

and then back to more other questions to dis510...i was hoping just to ask a couple questions only then stop.......

27, 29, 31

I tell u only one more thing. it's dreadful math, lol

did u ever notice a pattern in your multiplication tables of:

3x3=9...2x4=8   8 is only 1 less than 9.

look at more:

4x4=16,.....3x5=15  just one less again!

5x5=25....4x6=24...again just one less!

and so, let's say you know 16x16=256, what would 15x17=???

it is very simple using pattern shown above.

only dis310 answers!