SOLUTION: How do you solve each problem using at least two methods other than the traditional algorithm? Can anyone help? Please! 452 + 721 + 908 (520)(69)

Algebra ->  Divisibility and Prime Numbers -> SOLUTION: How do you solve each problem using at least two methods other than the traditional algorithm? Can anyone help? Please! 452 + 721 + 908 (520)(69)       Log On


   

Question 401533: How do you solve each problem using at least two methods other than the traditional algorithm? Can anyone help? Please!

452 + 721 + 908
(520)(69)

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!

You may add 400%2B700%2B900=2000, then add the tens and ones 52%2B21%2B08=81, and lastly add these two numbers together 2000%2B81=2081.
or, you may add two numbers at a time: 452%2B721=1173, hen add third one to that sum: 1173%2B908=+2081.