It is 600.
by adding or subtracting the values of the digits in the front place
Front end rounding is using the first or the first two digits to make an estimation. 37145 would be rounded to 40000.
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By using front end estimation, the numbers that you start of with have only one significant digit. It is, therefore, nonsense to have an answer with loads of significant digits.
When using front-end estimation, first you add the front-end digits. Then adjust by estimating the sum of the remaining digits. Then add the two values
Front end estimation- An estimation method in which the front digits are added or subtracted
The entire number to the left of the decimal.Example:567.345567 is the front end number
When using front-end estimation, we add or subtract the front digits, and then adjust for a more accurate estimation by estimating the sum of the digits to the right of the decimal point.
It is 600.
It means using only the first non-zero digit (rounded up if required), and replacing all other digits by zero.
by adding or subtracting the values of the digits in the front place
515+777=
1, 31, 263, 8153.
Front end rounding is using the first or the first two digits to make an estimation. 37145 would be rounded to 40000.
Front end estimation generally produces a better estimate of sums or differences than rounding before adding or subtracting. How to Estimate a sum by front end estimation * Add the digits of the two highest place values * Insert zeros for the other place values * Example 1: 4496 + 3745 is estimated to be 8100 by front end estimation (i.e. 4400 + 3700). * Example 2: 4496 + 745 is estimated to be 5100 by front end estimation (i.e. 4400 + 700).
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