Q: Is 14 a reasonable estimate for the sum of 5.45 and 8.59?

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1 + 3 + 5 + ... + 857 + 859 = 184900

The sum is 2.05 and you don;t need to estimate such a simple sum!

Yes.

7.5 + 9.2 = 16.7So 16.7 is reasonable.===========================You should not have to perform the addition in order to decide whether an estimatewas reasonable. That defeats the whole purpose of the estimating process.Ignore the decimal parts of your two numbers, and you have (7 + 9). You don't needa calculator to know immediately that THAT sum is 16. So 16 is a good estimate forwhat you'll have when you glue the decimal bits back onto the whole numbers, andwhen you reassemble everything and get a sum of 16.7 , that's so near your estimatethat you can be pretty sure that you added correctly.

Estimate by rounding to the nearest ten.​ Then, find the sum.221122plus+33554455​_​_The estimated sum is nothing.

Related questions

A reasonable estimate of the sum of 78 and 119 is 197.

A reasonable estimate is 1000. The actual total is 1016.

13,200

49800

16.25

1 + 3 + 5 + ... + 857 + 859 = 184900

. 87.8. 17.3------------.105.1As can be seen by the above sum, 105.1 is reasonable.

The sum is 2.05 and you don;t need to estimate such a simple sum!

One estimate is 800 although there is really no need t estimate such a simple sum: it is 778.

Yes.

46.78-18.55 and estimate each sum or difference = 28.23

7.5 + 9.2 = 16.7So 16.7 is reasonable.===========================You should not have to perform the addition in order to decide whether an estimatewas reasonable. That defeats the whole purpose of the estimating process.Ignore the decimal parts of your two numbers, and you have (7 + 9). You don't needa calculator to know immediately that THAT sum is 16. So 16 is a good estimate forwhat you'll have when you glue the decimal bits back onto the whole numbers, andwhen you reassemble everything and get a sum of 16.7 , that's so near your estimatethat you can be pretty sure that you added correctly.