Saturday

April 18, 2015

April 18, 2015

Posted by **Anonymous** on Wednesday, October 20, 2010 at 7:17pm.

- 3rd grade math -
**HAPPY FACE :)**, Wednesday, October 20, 2010 at 7:32pmfront 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.

- 3rd grade math -
**Anonymous**, Wednesday, October 20, 2010 at 8:54pmattn(happy face)thank you!!

- 3rd grade math -
**math**, Monday, October 25, 2010 at 9:39amashton broke apart a number into 30+7. what number did she start with?

- 3rd grade math -
**Anna**, Wednesday, November 21, 2012 at 12:27amuse any methond to eastimate each difference

- 3rd grade math -
**Anna**, Wednesday, November 21, 2012 at 12:30amuse any method estimate 667-651

**Answer this Question**

**Related Questions**

5th grade Math - You want to estimate 5.25-3.3. Why would using front-end ...

Elementary Math - Can you explain what the difference between rounding and front...

3rd grade math - i need help!! if the estimate is greater than or equal or 1,500...

math - You want to estimate 5.25-3.3 why would using front-end estimation tell ...

math - Can someone please show me how to estimate mixed numbers. An exsample ...

Math - Melvin estimate 645 + 322 by adding 600 + 300. Is his estimate sum an ...

math - 1.Estimate 45 x 56 using front-end. 2.Estimate 45 x 56 using rounding.

4th grade math - 3. Writing to Explain Use rounding to estimate the product 13...

math - cleon would like to estimate the difference between$579 and$85.explain ...

math - cleon would like to estimate the difference between$579 and$85.explain ...