The ballpark estimate of 245 can be rounded to 250 for simplicity. When considering the addition of a number, you would add that rounded figure. For example, if you're adding 20, you could estimate 250 plus 20, which equals 270. This method helps in quickly assessing the sum without precise calculations.
200+100
How do you make a ballpark estimate of 7201 plus 6988?
1214
600
33
600
209
14200
1330 plus 900
520.
120+220
23.40