The answer is 493.8. Simply add the numbers together like you would for two plus two. To check your work, a calculator is the best option.
491 + 284 = 775
+491 is a prime number because it has only two factors which are itself and one.
290 plus 500
287 + 491 + 200 + 500 + 300 + 500 + 280 + 400 + 290 + 490 = 3738
280+400
280 + 500 = 780
28 + 28 = 56.56 + 28 = 84.
22+22+28+28=100.
1 minus 2 plus 123 times 4 is equal to 491.
28 + 28 = 56
491-216 = 275
The answer is 56