1.

What is the estimated sum of 245+475 explain it​

Answer»

Answer:

730

Step-by-step explanation:

So, 200 + 400 is 600.

Now, 45 +75. So just do 50+80 and that's 130.

Now if you WANT to get answer. TAKE away the TWO 5's that we used to round up and you get 720.



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