How do you evaluate 6.40\times 1.8?

1 Answer
Mar 2, 2018

You can use the distributive law to simplify your calculations:
(a+b)(c+d)= ac+ bc + ad + bd

Explanation:

The above problem can be written as:

6.40 x 1.8 = (6 + 0.4) x (1 + 0.8) = 6(1) + 0.4(1) + 6(0.8) + (0.80)(0.4) = 6 + 0.4+ 4.8 +0.32=11.52