use the properties of addition and multiplication to complete the statement
2007-10-14 10:02:42 · 5 answers · asked by Sara R 1 in Science & Mathematics ➔ Mathematics
put 18 in the blank. It will demonstrate the associative property, which means it doesn't matter which numbers you add together first.
2007-10-14 10:12:07 · answer #1 · answered by nursesr4evr 7 · 0⤊ 0⤋
18
2007-10-14 17:12:53 · answer #2 · answered by dalbax2 6 · 0⤊ 0⤋
18
2007-10-14 17:07:08 · answer #3 · answered by Anonymous · 0⤊ 0⤋
(5+18)+4=5+(18+4)..
2007-10-14 17:07:39 · answer #4 · answered by Swapna 2 · 0⤊ 0⤋
first add up the left side 5+18+4=27
this mean the other side has to equal to 27 too so
27=5+4+x
if 5+4 is nine, what plus 9 equals 27? subtract 27 from 9 to get ur answer
9+x=27
27-9=18
missing number is 18
2007-10-14 17:07:05 · answer #5 · answered by Anonymous · 3⤊ 0⤋