T2T || FAQ || Ask T2T || Teachers' Lounge || Browse || Search || Thanks || About T2T
View entire discussion
[<< prev] [ next >>]
From: Laura To: Teacher2Teacher Public Discussion Date: 2005111715:17:59 Subject: Re: Here is a methed for subtracting Hello everyone, I know kids struggle with subtraction, I have a methed that can help them and I wanted to share with you, and I hope this can help others as well. As far as I know this methed only works for 10-20-30-40-50-60-70-80-90-100's, when subtracting a one digit number. Let's say 70-8= for an example: Now we know the numbers are always going to get smaller working with this methed, right. Now look at the number 70 it's going to get smaller,so change the 7 in seventy to one number smaller it will be a 6, Now remember the six for a little while......6 ok now put up both hands in front of you palms down,fold eight fingers down,you have two fingers up, Now apply the 6 with the 2 and you should see your answer. 70-8= 62 Lets try another one: 100-6= Now change the number one in one hundred to a 9,Now remember .....9 step 2: hold your hands in front of you,fold 6 fingers down,you shouls have 4 fingers up,Now apply the nine with the four and you should see your answer 100-6=94 tip: always remember to place the first number you had subtracted first in front of the number you subtracted last. I hope this methed can help others that struggle with subtraction.
Math Forum Home || The Math Library || Quick Reference || Math Forum Search