Well, darling, it's simple math. If you take 405 and add it to another 405, you get 810. So, 405 plus 405 equals 810. Easy peasy lemon squeezy.
59
510 + 810 = 1320
810 + 354 = 1164
If one hundred pennies equals one dollar, then 81,000 pennies equals 810 dollars.
9
19
59
810
510 + 810 = 1320
810 + 354 = 1164
810 + 103 = 913
If one hundred pennies equals one dollar, then 81,000 pennies equals 810 dollars.
3,410 :)
8 : 10 = 16 : 20
9
The answer = 3450
512 + -14 + 312 = 810