Asked by Jhelum
What are some tricks of multiplication
Answers
Answered by
Reiny
My suggestion is to just learn the proper way to multiply.
For relatively small numbers I might use the distributive property mentally.
e.g. 14 x 6 ----> 10x6 + 4x6 = 60+24 = 84
or in cases like
18 x 6 , you could do 20x6 - 2x6 , .... (18 = 20-2)
= 120 - 12
= 108
For larger factors it is often not worth the effort, and now that people have access to calculators on their smart phones, just use that technology.
For relatively small numbers I might use the distributive property mentally.
e.g. 14 x 6 ----> 10x6 + 4x6 = 60+24 = 84
or in cases like
18 x 6 , you could do 20x6 - 2x6 , .... (18 = 20-2)
= 120 - 12
= 108
For larger factors it is often not worth the effort, and now that people have access to calculators on their smart phones, just use that technology.
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