alex4538
alex4538
20-12-2016
Mathematics
contestada
find each product mentally. 7 times 3.8
Respuesta :
Nizux
Nizux
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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