No: not with the standard definitions of "add" and of numerical digits.
327 + 327 = 654
To solve -987 - (-654), you can rewrite it as -987 + 654. When you add these two numbers together, you get -333. The double negative in the original expression cancels out to become a positive number.
770. You can find the mean when you add all the numbers and divide by the amount of numbers there are. 268+ 1258+900+654/4
Well, isn't that a happy little question! If we take 649 and add 5 to it, we get 654. It's just a small adjustment, like adding a touch of sunlight to a painting to make it shine a little brighter.
20 percent of 654 = 654/5 or 130.820% of 654= 20% * 654= 20%/100% * 654= 1308/10= 654/5 or 130.8
27% of 654= 27% * 654= 0.27 * 654= 176.58
22% of 654= 22% * 654= 0.22 * 654= 143.88
97
All the multiples of 654, which are infinite: 654, 1308, 1962, 2616 + 654 . . .
375
Well, let's take a moment to appreciate the beauty of numbers coming together. If we round 654 to 650 and 97 to 100, we can estimate that 650 multiplied by 100 is 65,000. Isn't it wonderful how even in math, we can find harmony and simplicity?
45, as a percentage of 654 = 100*45/654 = 6.88%