404
400 + 40 +4 = 444
-4
530
negative 4
It is: 1.15 plus 2.85 = 4
(((800 plus 400) plus 400) plus 500) plus 500 = 2600
800
-((3c - 4)(3c + 4)(2c - 5)(2c + 5))
400 + 900 + 1000 = 2300
300000 plus 100000 plus 400 plus 290 is equal to 400,690.
6300
The standard form is 50,000,000 + 3,000,000 + 400 OR 53,000,400