Saturday

September 20, 2014

September 20, 2014

Posted by **Bart** on Saturday, April 17, 2010 at 10:31pm.

687 - 239 (without adjustment)

is this right?

600 + 200= 800 + 126=926

- math Did I do it right? -
**Ms. Sue**, Saturday, April 17, 2010 at 10:44pmIf your problem is 687 - 239, it makes sense to me to do it this way:

700 = 200 = 500

- math Did I do it right? -
**Ms. Sue**, Saturday, April 17, 2010 at 10:49pmCorrection:

700 - 200 = 500

- Ms. Sue -
**Bart**, Saturday, April 17, 2010 at 10:54pmRight it was subtraction. So what does "without adjustment" mean?

- math Did I do it right? -
**Ms. Sue**, Saturday, April 17, 2010 at 11:03pmI'm not a math teacher -- but I assume you don't need to adjust for the small differences between your estimated numbers and the actual numbers.

This site may explain it.

http://mathforum.org/library/drmath/view/65415.html

- math Did I do it right? -
**Bart**, Saturday, April 17, 2010 at 11:54pmThank you

**Answer this Question**

**Related Questions**

math - Use front-end estimation with or without adjustment as indicated to find ...

Math - How would I go about solving this problem? Use front-end estimation with ...

math - Use front-end estimation with adjustment to estimate each of the ...

answer - 7594 - 2831 what is the front end estimation with adjustment to ...

Math - I used front end estimation without adjustments on this problem: 73,811/...

math - Use front-end estimation to find the value of the expression. 73,811 ÷ ...

Math - Can someone help me please, I am having a hard time understanding these ...

science - When first looking at a slide under the microscope, you should use: ...

math - 6th grade - how do you do front end estimation when the number of digits ...

English - Can someone Please heip me with my Punctuation and make sure this ...