find each product mentally. 7 times 3.8
to do it mentally means to do it in your headfirst do 7 3 = 21 in your headthan 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 = 26.6Final Answer : 26.6
