122
1214
796 - 387 = 800 - 390 = 800 - (400 - 10) = 800 - 400 + 10 = 400 + 10 = 410
The estimate for 15,772 is 10,000
It is an estimate that is quite safe
An upper bound estimate is a estimate that is greater than the actual solution.
A ballpark estimate is a very rough approximation of a number, figure, or calculation.
How do you make a ballpark estimate of 7201 plus 6988?
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 .
370
7200
150
6500
136-79 with ballpark estimate and partial differences method = 57
ballpark
4900
Make a very approximate estimate.
455