alex4538 alex4538

20-12-2016
Mathematics

contestada

find each product mentally. 7 times 3.8

Respuesta :

20-12-2016

to do it mentally means to do it in your head

first do 7 * 3 = 21 in your head

than do 7 * 0.8 = 5.6 ( this might be hard to do in your head but you know 7*8 = 56 so add a decimal since it is 0.8 not 8 )

Add : 21 + 5.6 = 26.6

Final Answer : 26.6

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