It's an overestimate. The actual total is 1.61
160 by estimate
There is no need to estimate when the exact answer is so easy to find. 55*2 = (50 + 5)*2 = 50*2 + 5*2 = 100 + 10 = 110
The estimate is 1.
6+2=8
Most people would estimate that as 6 (an overestimate) - 4 (an underestimate) which would estimate the answer as 2, which is an overestimate.
You know if an answer is an over or underestimate because if the last 2 # is 5 and over, it is an overestimate. If the last 2 # is 4 and under, it is an underestimate. Ex: 345 answer if you were estimating 350 over. Ex: 232 if you were estimating your answer would be 230 and that is under.
79.5
It's an overestimate. The actual total is 1.61
For multiplication or division, the only reasonable estimate is -2.
To the nearest integer, 2
160 by estimate
100,000,000 that means 100 million (this seems like a gross overestimate. half of the population of Brazil goes to carnival in Rio? I have actually gone. It is crowded but not that much. Maybe this estimate is recounting people for each day. Officially Carnival is only 4 days but in practice there are events spread over 2 weeks.)
201 x 2 = 402 If you had to, you could estimate 200 x 2. The answer will be two more than that.
The answer being 0.5456, the digit 2 can not be a good estimate since it is not close.
There is no need to estimate when the exact answer is so easy to find. 55*2 = (50 + 5)*2 = 50*2 + 5*2 = 100 + 10 = 110
The estimate is 1.