99 and -99
-40
270
3
change the sign and do the opposite operation.
When subtracting integers, people often add the opposite of the number being subtracted. This means that instead of performing the subtraction directly, they convert it into an addition problem by changing the sign of the integer being subtracted. For example, to calculate (5 - 3), one can think of it as (5 + (-3)), which simplifies the process and helps avoid mistakes. This method is particularly useful when dealing with negative numbers, ensuring that the operation remains consistent.
198, 199 and 200 if you add them.
The numbers are 195, 196, 197 and 198.
5 and 4
-40
270
3
198
2009 + 198 = 2207
Yes opposite numbers add up to 7
Compatible numbers means to round like an example 402+198 now what we have to do is take the 198 and make it 200 and we have to take 402 and make 400 you see how I add 2 numbers in one and subtract 2 from the other.
change the sign and do the opposite operation.
On a six-sided cube die, the opposite side is the 2. (the opposite sides add to 7)