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
Your brain, of course.
It depends on your computational skills.
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
benchmark numbers
Your brain, of course.
It depends on your computational skills.
if you mean multiplication then 4x25=100 x 27 = 270
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).
Numbers like 10, 25, 50, and 100 are easy to compute mentally because they have simple multiples or divisions that are easy to work with. For example, doubling 25 is 50, or dividing 100 by 10 gives you 10. These numbers are often used as benchmarks in mental math calculations.
The term that describes numbers that are easy to compute mentally is "round numbers." Round numbers are whole numbers that end in zero or five, making them simpler to work with in mental calculations. These numbers are often used in estimation and quick arithmetic tasks due to their ease of manipulation.
dont know about associative property but this one is easy in your head. 4x25=100x27=2700