2.0999999999999996
54+86
The sum is 2.05 and you don;t need to estimate such a simple sum!
In arithmetic, estimate usually means rounding the numbers so they're easier to manipulate. Example: Estimate the sum of 432 and 267. You can round them to 430 and 270 and estimate the sum as 700. You could also round them to 400 and 300 and estimate the same total. To estimate a difference, just subtract them. 430 minus 270 is 160. The actual sum is 699 and the actual difference is 165, so your estimates came pretty close.
1423832
2.0999999999999996
54+86
7.000
21964
The sum is 2.05 and you don;t need to estimate such a simple sum!
46.78-18.55 and estimate each sum or difference = 28.23
In arithmetic, estimate usually means rounding the numbers so they're easier to manipulate. Example: Estimate the sum of 432 and 267. You can round them to 430 and 270 and estimate the sum as 700. You could also round them to 400 and 300 and estimate the same total. To estimate a difference, just subtract them. 430 minus 270 is 160. The actual sum is 699 and the actual difference is 165, so your estimates came pretty close.
rounding
1423832
The answer is -30.
3
No difference. Some companies use each word interchangeably.