What is #43 * 5#?

1 Answer
George C.
Apr 12, 2016

#215#

Explanation:

To multiply by #5# you may find it easiest to multiply by #10# - i.e. add a zero - and divide by #2#.

Otherwise, note that #4*5 = 20# and #3*5 = 15#, so:

#43*5 = (40+3)*5 = (40*5)+(3*5) = 200+15 = 215#

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