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Well, the idea is to round each number, then add them. This basically allows you to do estimated calculations in your head, whereas the complete operation would require (for most people) to use pencil and paper, or a calculator.
Since there are different ways to round numbers, the answers may vary. I would suggest, in this case, to round each number to the nearest multiple of 10.
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∙ 9y ago
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How can you Estimate the sum or difference using benchmarks?
rounding
What does it mean to estimate the sum?
To estimate the sum is to guess what the answer is for an addition problem. For example, if it was 8 + 9 you would see what number 8 is close to (like ten) and do the same with number nine and your estimate would be 20.
What is a method used to estimate a sum when all addends are about the same?
Mutltiply that "same" number by the number of data points.
Does product and sum mean the same?
No - the product of numbers is the answer to a multiplication sum, while the sum of numbers is the answer to an addition sum.
What numbers would you use to estimate the sum of 17 and 75?
20 and 80 based on conventional rules. 20 and 70 to be more accurate.
What is the estimate sum or difference of 1.45 0.6?
The sum is 2.05 and you don;t need to estimate such a simple sum!
What is a reasonable estimate of the sum of 78 and 119?
A reasonable estimate of the sum of 78 and 119 is 197.
What is the estimate sum of 356 and 422?
One estimate is 800 although there is really no need t estimate such a simple sum: it is 778.
What is 46.78-18.55 and estimate each sum or difference?
46.78-18.55 and estimate each sum or difference = 28.23
What is the estimate sum for 406?
400
Estimate by rounding to the nearest ten. Then, find the sum.221122plus+33554455__The estimated sum is nothing.?
Estimate by rounding to the nearest ten.​ Then, find the sum.221122plus+33554455​_​_The estimated sum is nothing.
How do you estimate 58 and 3?
It is 61: you do not need to estimate a sum as simple as that!
How can you estimate the sum of two game cards when one game card is decimal and one is a fraction?
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.
What is the estimate each sum or difference for 6.5 - 4.4?
2.0999999999999996
What numbers would you use to estimate the sum of 17.23 and 3.71?
17 and 4: sum is 21.
What is the estimated sum of 12904?
The sum of a single number is itself. So the answer is 12904 - and no estimate required.
How can you Estimate the sum or difference using benchmarks?
rounding
