front end estimation to estimate the sum...like..436+517= ~~~~~~also we have some problems that say use rounding to estimate the sum...like..236+710=....DO WE DO BOTH OF THESE THE SAME WAY??? solve then estimate??? my child has been out from school for a few days sick and missed this. Thanks!

front end estimation: 436+517=400+500=900

rounding: 236+710= 200+700=900
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).

rounding:
* Rounding makes numbers that are easier to work with in your head.
* Rounded numbers are only approximate.
* An exact answer generally can not be obtained using rounded numbers.
* Use rounding to get a answer that is close but that does not have to be exact.

How to round numbers
* Make the numbers that end in 1 through 4 into the next lower number that ends in 0. For example 74 rounded to the nearest ten would be 70.
* Numbers that end in a digit of 5 or more should be rounded up to the next even ten. The number 88 rounded to the nearest ten would be 90.

attn(happy face)thank you!!

ashton broke apart a number into 30+7. what number did she start with?

use any methond to eastimate each difference

use any method estimate 667-651

Front-end estimation and rounding to estimate the sum are similar techniques, but they are not exactly the same. Let me explain each method to you.

1. Front-end estimation:
- To estimate the sum using front-end estimation, you look at the digit in the front (leftmost) place of each number and add those digits together.
- In the given example, 436 and 517, the leftmost digits are 4 and 5, respectively.
- Add these two digits together: 4 + 5 = 9.
- So, the estimated sum using front-end estimation is 900.

2. Rounding to estimate the sum:
- To estimate the sum using rounding, you round each number to the nearest place value, typically the same place value for both numbers.
- In the example 236 and 710, both numbers are rounded to the nearest hundred (the hundreds place).
- 236 rounded to the nearest hundred becomes 200.
- 710 rounded to the nearest hundred becomes 700.
- Add these two rounded numbers together: 200 + 700 = 900.
- So, the estimated sum using rounding is also 900.

As you can see, in both methods, the estimated sum is the same. However, the process of obtaining the estimate differs slightly. In front-end estimation, you only focus on the leftmost digits, while in rounding, you round both numbers to the same place value.

To summarize, for both front-end estimation and rounding to estimate the sum, you would solve the problem first, and then apply the estimation technique to get an approximate answer.