Question

(i) What is the largest two-digit multiple of 18?
(ii) What is the 8th multiple of 18?

Answer 1

(i) The multiples of 18 are as follows:
$18\times 1=18$
$18\times 2=36$
$18\times 3=54$
$18\times 4=72$
$18\times 5=90$
$18\times 6=108$. . .
Hence, the largest two-digit multiple of 18 is 90.
(ii) The multiples of 18 are as follows:
$18\times 1=18$
$18\times 2=36$
$18\times 3=54$
$18\times 4=72$
$18\times 5=90$
$18\times 6=108$
$18\times 7=126$
$18\times 8=144$. . . .
Hence, the 8th multiple of 18 is 144.