5x88 = 8x55

[ravas]

4x77 = 7x44
5x88 = 8x55
6x99 = 9x66


What is this called? Or how can we describe it?

:-]

 

[Deleted member 4993]

4x77 = 7x44
5x88 = 8x55
6x99 = 9x66


What is this called? Or how can we describe it?

:-]

Multiplication by 11 and associative property of multiplication??!!

 

[Ishuda]

4x77 = 7x44
5x88 = 8x55
6x99 = 9x66


What is this called? Or how can we describe it?

:-]

[h=1]Fundamental theorem of arithmetic[/h]

 

[ravas]

Thank you!

 

[Steven G]

4x77 = 7x44
5x88 = 8x55
6x99 = 9x66


What is this called? Or how can we describe it?

:-]

Do you see why this works?
4x77=4x(11*7)=(4x11)x7=44x7
I agree with Subhotosh about this being the associative law of multiplication and properties of 11