150 and 170
149+19 = 168
A ballpark estimate is a very rough approximation of a number, figure, or calculation.
138
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 .
136-79 with ballpark estimate and partial differences method = 57
370
7200
150
6500
ballpark
4900