How do you evaluate #6.40\times 1.8#?

1 Answer
divya g.
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#

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