I would not recommend estimating 1-digit numbers.
I estimate that the nearest whole number to 5 is either 4 or 6.
380/5 = 76
60/12 = 5 48/12 = 4 The answer will be between 4 and 5, closer to 5. Estimate 4.75
2.2360...
$395.20/5
0.4167
5*80 + 5*5 = 400 + 25 = 425
You wouldn't have to estimate for addition, subtraction or multiplication. For division, use 30/5 = 6
The estimate is 1.
The best estimate is always the exact answer since it is always possible to improve upon any other estimate.
5
14