It is 2400 + 900 = 3300.
3300
3000
900
900
126.1429
880
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.
6% of 883= 6% * 883= 0.06 * 883= 52.98
One estimate is 800 although there is really no need t estimate such a simple sum: it is 778.
A343316
2422
46.78-18.55 and estimate each sum or difference = 28.23
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.
1 and 883