When the sum of 2.0 and 2.0 is subtracted form the product of 2.0 and 2.0 what is the difference?
(2x2)-(2+2) = 4-4 = 0
The difference when subtracting the prime number 2 from the prime number 127 is 125. No other two prime numbers added together or subtracted from each other have a sum or difference of 125. All primes except the number 2 are odd numbers, and two odd numbers added together or subtracted will always produce an even sum or difference.
Because you will see that the sum or difference is close to your estimate. If it isn't that close, round the number you're estimating to the nearest compatible number and find the sum or difference Sum = Addition Difference = Subtraction Product = Multiplication Quotient = Division Does this answer help?