81 multiplied by 18 is 1,458.
-9 and -9 multiply to get 81. ■
The factors of 18 are 1,2,3,6,9, and 18. The factors of 81 are 1,3,9,27, and 81.
18 + 81 = 99
Gee, I don't know. Let's check it out. If it is, then 18 x 18 = 81 . 18 x 18 = 324 Nope. 18 x 18 is not 81, so 18 is not a square root of 81.
18/81 = 2/9 (divide top and bottom by the hcf of 18 & 81 = 9)
4.5
(81 ÷ 9) × 2 = 18
18 multiplied by 81 is 1,458.
81*4 = 324
Factors of 18: 1 2 3 6 9 18 Factors of 81: 1 3 927 81 The GCF of 18 and 81 is 9.
The LCM is 162.
The LCM of 18 and 81 is 162