"and" in numbers - ProTeacher Community
 Join the conversation! Post now as a guest or become a member today.

BusyBoard

##### "and" in numbers

>

 westwood Joined: Sep 2007 Posts: 420 Senior Member
westwood

Joined: Sep 2007
Posts: 420
Senior Member
"and" in numbers
09-12-2010, 08:02 PM
 #1

I've always taught that when saying a number, "and" is reserved for the decimal point. A LOT of my students this year say "and" in the number. Example: One hundred and thirty-six. Is it wrong to correct them so they only use it with decimals? Some of my students just can't seem to stop saying it. Any thoughts on this?

 NeeCee Joined: Jun 2008 Posts: 3,733 Senior Member
NeeCee

Joined: Jun 2008
Posts: 3,733
Senior Member
Correct Them
09-12-2010, 08:08 PM
 #2

Our math text explicitly says to stop them from using the word "and" in this way as it is used to denote a decimal number. So, to avoid confusion later, stop them now.

 lte's mom Joined: Aug 2010 Posts: 1,063 Senior Member
lte's mom

Joined: Aug 2010
Posts: 1,063
Senior Member
I correct them
09-12-2010, 08:08 PM
 #3

I always try to correct them.....I point out that it's incorrect but that most people say it.....kinda like...well.... like

 Gromit Joined: Mar 2009 Posts: 8,800 Senior Member
Gromit

Joined: Mar 2009
Posts: 8,800
Senior Member

09-12-2010, 08:19 PM
 #4

I try to correct it, but they hear it *everywhere* in the real world so it's a very hard habit to break.

 rachelmpd Joined: Nov 2009 Posts: 8,745 Senior Member
rachelmpd

Joined: Nov 2009
Posts: 8,745
Senior Member
Guilty
09-12-2010, 09:44 PM
 #5

I have a bad habit of saying it. I did not realize it until a 4th grade teacher asked us to make sure the 3rd graders were not doing it. Last year, I made a habit to correct the 1st and 2nd graders from saying it. Maybe try talking about money.

 smithf1 Joined: Jul 2006 Posts: 1,361 Senior Member
smithf1

Joined: Jul 2006
Posts: 1,361
Senior Member
I correct them
09-13-2010, 03:00 AM
 #6

My prinicipal always says "two thousand AND ten" during morning announcements. We giggle because I make such a deal out of "and" meaning there is a decimal point in the number.

 dee Joined: Aug 2005 Posts: 6,329 Senior Member
dee

Joined: Aug 2005
Posts: 6,329
Senior Member
Correct them
09-13-2010, 08:11 AM
 #7

It's imperative for understanding in math in the later years.

 mila15 Joined: Mar 2010 Posts: 328 Full Member
mila15

Joined: Mar 2010
Posts: 328
Full Member

09-13-2010, 12:48 PM
 #8

Oh boy, we couldn't get away with saying that in 6th grade. I had a teacher who would glare at us until we corrected our mistake.

 sevenplus Joined: Aug 2008 Posts: 4,104 Senior Member
sevenplus

Joined: Aug 2008
Posts: 4,104
Senior Member

09-13-2010, 01:05 PM
 #9

Correct them. I teach the correct way in K. I actually remember the moment I learned that rule in 5th grade. Up until that point, I'd had no idea.

It mostly comes up in my class when saying the year and then after the 100th day of school when we're counting over 100. I do tell them that many adults don't know the rule, so they may hear it incorrectly a lot.

 sedrait Joined: Jul 2007 Posts: 346 Full Member
sedrait

Joined: Jul 2007
Posts: 346
Full Member
in SRA corrective math you are to say "and"
09-13-2010, 02:03 PM
 #10

It is scripted and it says, for example, one hundred and thirty six. I never say "and" , but have to follow the script. I KNEW it sounded funny.

 noomie Joined: Mar 2009 Posts: 634 Senior Member
noomie

Joined: Mar 2009
Posts: 634
Senior Member
I'm with you
09-13-2010, 03:28 PM
 #11

the "and" is reserved in my fourth grade class for decimals.

 westwood Joined: Sep 2007 Posts: 420 Senior Member
westwood

Joined: Sep 2007
Posts: 420
Senior Member
Thanks so much
09-13-2010, 03:37 PM
 #12

Nice to know I'm on the right path.

 School Time Joined: Jul 2007 Posts: 2,414 Senior Member
School Time

Joined: Jul 2007
Posts: 2,414
Senior Member
09-13-2010, 03:59 PM
 #13

I correct my students but other adults say the "and". It makes it harder to correct the kids when they hear everyone else say it.

 MrsDriver Guest
MrsDriver

Guest
I correct...
09-13-2010, 04:24 PM
 #14

my students immediately. I also show them on the board what the number looks like when they say "and". If they are telling my what to write I write it exactly as they say it. It helps for them to see the difference.

 Teacher Gal Joined: May 2010 Posts: 195 Full Member
Teacher Gal

Joined: May 2010
Posts: 195
Full Member
I say
09-13-2010, 05:43 PM
 #15

correct it, but like other PP have stated they hear it everywhere. I remember one year during a presidential election, I had my students count the number of times a news journalist used "and" in the middle of a number. We made a graph of the numbers the next day in math class. It was a fun experiment, and a great time to point out - just because everyone is jumping off the building doesn't mean you have to follow them! It is hard to stop when they hear it everywhere.

Join the conversation! Post as a guest or become a member today. New members welcome!

>
BusyBoard