Break it up into two separate problems. First 4X25=100, which is easy enough. Then 27X100=2700.
the property which states that for all real numbers a,b,and c their product is always the same, regardless of their grouping
No.
4*25 = 100 So 4*25*27 = (4*25)*27 = 100*27 = 2700
It depends on your computational skills.
Your brain, of course.
the property which states that for all real numbers a,b,and c their product is always the same, regardless of their grouping
No.
4*25 = 100 So 4*25*27 = (4*25)*27 = 100*27 = 2700
Compatible number
benchmark numbers
Your brain, of course.
It depends on your computational skills.
compatible numbers
if you mean multiplication then 4x25=100 x 27 = 270
Compatible Numbers numbers that are easy to compute mentally are called
The patterns and properties to compute mentally 120 times 30 is the numbers 12 and 3 plus the two 0. Multiply 12 by 3 (36) and add the two 0 (3600).
There are many ways to do it. Have a look at the Wikipedia article (check the link).