dodecahedron polyhedra

math image

math image

math lessons, help and practice (arithmetic)geometry and math art (fractals, tessellations, polyhedra and more)math gamesThinking puzzles and online jigsaw puzzlesother fun for kids
math spacermath for teachers (resources, support and ideas)math for parents (resources, support, ideas)spike's game zoneCoolmath.commath spacer

 Subtracting Three Digit Numbers with
 Regrouping (Borrowing)
  Learning how to regroup when subtracting three digit numbers  (page 1 of 5)

math image

This is going to work a lot like subtracting with two digit numbers...  Grab some colored markers or crayons and work along with me!

Here we go!

639-275

Just like before, stack and line things up...  Now, we'll have a hundreds stripe to deal with:

639-275

As usual, the first thing to do is to subtract the ones...  We don't have to do any borrowing on this one:

Work for 639-275...  Subtracting the ones
 

Now, we'll subtract the tens stripe...  But, we run into that problem again!

Work for 639-275...  We can't subtract 7 from 3, since 7 is bigger than 3!

No problem!  We're going to fix this, just like we did in the last lesson.  See if you can figure it without me, then go on to the next page to see how you did!  This time, you'll be borrowing from the hundreds stripe...

 The printing, distribution and/or downloading of these lessons is strictly prohibited. 

Click here to get back to the subtraction main page!

 


.....::::::::::::::: 
HELP SUPPORT COOLMATH  :::::::::::::::.....

:::::::  link to us   :::::::   advertise with us  :::::::
 
 ||  about us  ||  safe surfing  ||  privacy policy  ||  terms of use  ||  copyrights & fair use  ||
||  math  ||  math for ages 13-100  ||  math for kids  ||  math for teachers  ||  math for parents  ||  math games  ||  algebra  ||
||  math help lessons  ||  math practice problems  ||  online math dictionary  ||  algebra books  || math anxiety  ||
||  science  ||  free online games and puzzles  ||  continuing teacher education  ||

Thanks for visiting Coolmath4kids.com
© 1997-2009 Coolmath.com, Inc.