3rd grade math

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!

  1. 👍 0
  2. 👎 0
  3. 👁 72
  1. 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.

    1. 👍 0
    2. 👎 0
  2. attn(happy face)thank you!!

    1. 👍 0
    2. 👎 0
  3. ashton broke apart a number into 30+7. what number did she start with?

    1. 👍 0
    2. 👎 0
    posted by math
  4. use any methond to eastimate each difference

    1. 👍 0
    2. 👎 0
    posted by Anna
  5. use any method estimate 667-651

    1. 👍 0
    2. 👎 0
    posted by Anna

Respond to this Question

First Name

Your Response

Similar Questions

  1. Elementary Math

    Can you explain what the difference between rounding and front end estimation is? For example round 8267-2761= and front end estimate 6489-1807= .

    asked by Susan on September 10, 2008
  2. math

    You want to estimate 5.25-3.3 why would using front-end estimation tell you more about the answer than rounding?

    asked by lindsay on November 10, 2009
  3. 5th grade Math

    You want to estimate 5.25-3.3. Why would using front-end estimation and adjusting tell you more about the answer than rounding?

    asked by Hayley on September 4, 2009
  4. Math

    First round to the nearest whole number. 10.3 + 1.46 11.53 + 7.23 so i believe 10 + 1.50 = 1.60?? then 11.50 + 7.20 is 18.70 ? Use front-end estimation to estimate each sum. 4.39 + 9.57 3.62 + 2.31 would it be 4.40 + 10.00 = 14.40

    asked by Anonymous on August 25, 2018
  5. Math

    Use front-end estimation to estimate the sum to the nearest whole number. 13.40+36.63+125.042 How do I solve this question?

    asked by Genevieve on April 3, 2018
  6. math

    why would using front-end estimation tell you more about the answer than rounding?

    asked by lindsay on November 10, 2009
  7. math

    why would using front-end estimation tell you more about the answer than rounding?

    asked by lindsay on November 10, 2009
  8. 1 Math question

    Estimate $6.56 + $13.02 using front-end estimation. about $19.60 about $18.60 about $20.10 *** about $17.10

    asked by Anonymous on November 25, 2014
  9. Rounding and estimating

    estimate.State your standard(rounding,front-end, or clustering.) 91.7 + 88.6 + 89.1 + 92.52 + 90.6 3.9 + 8.1 + 2.06 Please and Thank-You Standard = what process you always use. For example, if you always round up for 6 or .6,

    asked by Bowier4 on October 9, 2006
  10. math

    front-end estimation to find and estimate for 4,381+321+6,918

    asked by stephanie on August 23, 2011

More Similar Questions