How do you find the product #14(-5)#?

Question

2868 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-12-28T13:59:45

#-70#

#14xx(-5)#

1) Multiply the #""14" " #and #5" "# separately

2) Put the correct sign at the front according to the rule:

#+xx+=+#

#-xx- =+#

#+ xx - =-#

#- xx + =-#

1) #14xx5#

a quick way to multiply by #" "5#

add a zero, then half the answer

so #14 xx5=140-:2=70#

2) sign, we have a

#+ xx - =-#

so answer #=-70#