18
Three books plus five books equals eight books. Three bananas plus five bananas equals eight bananas. Three houses plus five houses equals eight houses. Three tenths plus five tenths equals eight tenths.
Three six
Fifteen is to five as nine is to three. This is because fifteen divided by five equals three, and similarly, nine divided by three also equals three. The relationship is based on division, where the first number is being divided by the second number.
Three sixteenths
"Bi" pronounced, "bye".
five
Three books plus five books equals eight books. Three bananas plus five bananas equals eight bananas. Three houses plus five houses equals eight houses. Three tenths plus five tenths equals eight tenths.
8
Three six
It is: 100
Fifteen is to five as nine is to three. This is because fifteen divided by five equals three, and similarly, nine divided by three also equals three. The relationship is based on division, where the first number is being divided by the second number.
Three sixteenths
3125
"Bi" pronounced, "bye".
Pentalogy is 5, and a tetralogy is 4.
Five thirds (five over three)
two plus three equals five