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
600
600
The ballpark estimate for 439 plus 71 can be simplified by rounding both numbers. Rounding 439 to 440 and 71 to 70 gives us 440 plus 70, which equals 510. Therefore, the ballpark estimate for 439 plus 71 is approximately 510.
1330 plus 900
200+100
How do you make a ballpark estimate of 7201 plus 6988?
209
14200
1214
600
33
600
1330 plus 900
23.40
120+220
520.