How do you solve #$95.69\times 9#?

1 Answer
Nov 15, 2017

I am guessing that the decimal is giving you a problem. This is a sort of cheat.

$861.21

Explanation:

We can change the way that #95.69# looks as long as we include a correction that takes it back to the original value.

We can choose when to apply that correction. I am going to do so at the very end.

Don't like decimals so lets get rid of it.

#95.69# is the same as

#color(green)(9569)color(red)(xx1/100 larr" The correction")#

So consider just:

# color(white)("dd") color(green)(9color(white)(.)5color(white)(.)6color(white)(.)9)#
#ul(color(green)(color(white)("ddddddd.") 9larr" Multiply"))#
#color(green)(ul(color(white)() 8color(white)(.)6color(white)(.)1color(white)(.)2color(white)(.)1color(white)("ddddddddddd")))#
#color(white)("d.")5color(white)(.)6color(white)(.) 8 larr" Caried values"#

Now we apply the correction:

#color(green)(86121color(red)(xx1/100) =861.21 #

But we are counting in dollars giving:

#color(green)( $861.21 )#