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education.com asks:
Q:

How to explain math fact families to my first grader?

"I feel so stupid. I'm 27 and can't even help my first grader with his math homework. I don't remember learning fact families. Can anyone help with an easy explanation for him and me? lol"

Asked by Caroline in commenting on the activity, "Find the Math Fact Family":
http://www.education.com/activity/article/Fact_...
In Topics: Helping my child with school work and home work, Helping my child with math
> 60 days ago

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Expert

Allyn Anderson
Apr 10, 2010
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What the Expert Says:

Here's a short definition for you. A "Fact Family is a collection of related addition
and subtraction facts, or multiplication and division facts, made from the same numbers. For 7, 8, and 15, the addition/subtraction fact family consists of  7 + 8 = 15, 8 + 7 = 15, 15 - 8 = 7, 15 - 7 = 8.

For 9, 6, and 54, the multiplication/division fact family consists of 6 * 9 = 54, 9 * 6 = 54, 54/9 = 6, 54/6 = 9."

Below is a web site that might give you additional information.
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Additional Answers (6)

alfletcher
alfletcher writes:
I teach them about the "house". They are a family and each equation has it's own room. Two on the downstairs, two upstairs. The roof of the house has the three numbers in each point (triangle rooftop, a number in each angle). The equations each have their own room
for instance 5,3,8 go in the triangle/roof.
Put a + sign in the two bottom rooms and a - sign in the two top rooms to get them started.
Then, make your triangle; 5+3=8,3+5=8;
Big brother number goes first in subtraction so 8 will start both minus equations.
I hope this helps!!!!
> 60 days ago

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tbftgog
tbftgog writes:
Fact families are the names for each number.  You do it for 10, then 9, 8,7, etc.

Example:  Names for ten or the ten family.
Since 10 + 0= 10     Then 0 + 10 += 10
Since 9 + 1 + 10      Then 1 + 9 = 10
8 + 2 =10,    2 + 8 =  etc....

Names for nine (nine family).
Since 9 + 0 = 9  then 0 + 9 = 9, 8 + 1= 9,    1 + 8 =9, etc...

Having the child write these daily and using flash cards with the "fact families",
helps the child eventually memorize and know the answer just by seeing the numbers together. 8 + 2 = 10   2 + 8= 10,  7 + 3 =10  3 + 7 = 10, etc

Hope this is of help to you.
Homeschooling mother of 6
> 60 days ago

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affanahmed
affanahmed writes:
3+8=11
8+3=11
11-8=3
11-3=8
> 60 days ago

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NaturallyRaw
NaturallyRaw writes:
This is NOT an answer, however I had to let you know you are not alone here! I personally do not care for this mythology of teaching, I feel they should have left delivery of material alone and changed how they think "standard" for no one knows standard really for everyone is different and learns different things at different rates. and there are several different learning methods..... hands on....... or black board and book...etc... making a "standard and changing the delivery" so all learn the same equally is only dumbing our nation down.  Standards get lowered this way, kids get bored... etc... it's all crazy... I am 48 have a 27 yr old who went thru school fine...now my 7 yr old and I look at her homework and I go ..HUH???? Then I have to read it several times and/or look to the internet! Then I am thinking how dumb! I hate it for she knew without confusion how to add double digits until first grade that confused her!! It's insane!  There are 5 states that are not using the common core (yet) hope they keep it that way!  Think I need to move to better educate my child!! sorry wanted to share, it's just my opinion, maybe food for thought!  Good Luck to your child and you!
> 60 days ago

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hiray
hiray writes:
Which is a fact related fact 15-6=9
> 60 days ago

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1980mireya
1980mireya writes:
Write the fact family for these numbers 0,2
> 60 days ago

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