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sum means addition so the sum of 5 and 2 will be 7
It means the sum of the angle measurements.
NO!!! Product means Mu;ltiply Sum means Addition (Add).
the answer to the addition problem
The sum is 2.05 and you don;t need to estimate such a simple sum!
A reasonable estimate of the sum of 78 and 119 is 197.
One estimate is 800 although there is really no need t estimate such a simple sum: it is 778.
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.
400
Estimate by rounding to the nearest ten.​ Then, find the sum.221122plus+33554455​_​_The estimated sum is nothing.
It is 61: you do not need to estimate a sum as simple as that!
It depends on your level of numerical skill. You can convert the decimal to an approximate fraction and estimate the sum of the two fractions, or you can convert the fraction to an approximate decimal and estimate the sum of the two decimals or, if you are more able you just estimate their sum directly.
You add together all the observations for the variable of interest and divide the sum by the number of observations.
The sum of standard deviations from the mean is the error.
2.0999999999999996
17 and 4: sum is 21.