How do you multiply #-825.3( - 0.001) #?

1 Answer
David Drayer
Mar 8, 2017
  • .8253 multiple #(- xx -)= +# Then move the decimal three places to the left.

Explanation:

A negative times a negative equals a positive.

A negative take be thought of as something bad or as taking something away. So a negative negative can be thought of as taking away something bad which is good.

so # - xx - = + #

Multiplying by .001 is the same as multiplying by 1/1000 which is the same as dividing by 1000. Dividing by 1000 moves the decimal three places to the left.

Another way of expressing this problem is

# 8.253 xx 100 xx 1/1000 # This can be rewritten as

# 8.253 xx 100/100 xx 1/10# { # 100/100 = 1 # } so this leaves

# 8.253 xx 1/10 = .82253#

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