Ballpark estimate would be rounding the numbers to the nearest 10. If the number's second number is more than 5, it will go up. But if its 4-0 you round down.
So you change 52 to 50 and 29 to 30.
And if you had to do the ballpark estimate you just do 50 - 30 in your head and you get 20.
How do you make a ballpark estimate of 7201 plus 6988?
Make a very approximate estimate.
A ballpark estimate is a very rough approximation of a number, figure, or calculation.
i would say they way to get the ballpark estimate is by taking the number. and see what is the estimate for that number and then you take that estimated number and then add to get your answer .
7200
6500
370
150
136-79 with ballpark estimate and partial differences method = 57
4900
ballpark
122