Question

What is the estimated sum? Round each addend to the nearest ten thousand before adding.



42,359 + 312,738









A.
350,000







B.
352,000







C.
355,000







D.
360,000

Answer 1

42359 to nearest ten thousands is 40000

Answer 2

do the same with 312738

Answer 3

Ok thanks

Answer 4

you count to four digits that makes ten thousands then look to the digit before it
if it is less than 5 you round the number to 0
if the number is equal or bigger than 5 then you round to tenths

Answer 5

you are welcome