### Simple Math Advice on Remembering Birthdays and Making Shopping Lists

You know those people who need to recollect the year of their parents', siblings' and even kids' birth, to tell how old these relatives are?
“She was born in April 1998, so she must be 11 years old.”
Well, they may be on to something...

Take me as a bad example. Whenever I hear that one of my relatives' kids has a birthday, I call the parents to ask for the child's age and rush to buy a present for him. When we visit relatives for the holidays, I create long lists of names and terrorize my husband until he calls to find out the exact ages of all his nephews. A year passes and then we call again.
"She is already 13! We can't believe she is growing up so fast."
We should have known. She was 12 the year before...

My new best strategy and my advice: the first time you buy a present for your friend or relative, record the date and year of their birth in your phone book, contact list, or calendar. Next year, to recall their age, all you need to do, is simple subtraction. They will be really surprised you knew! Suggest this to your aunt as well – she may stop embarrassing your 10 year old by asking if he has a girlfriend yet.

Shopping lists.
We love them. We hate them. We live by them.
Except that sometimes we forget to write something obvious like milk or bread, and then as soon as we are back from one shopping trip, we know another is imminent. And as much as we love some of these stores, who wants to go food shopping more than once a week?

Try a new approach - instead of marking what you need to buy (and risking missing something), create a master list of all the things you ever buy, xerox it or print one copy each week. You can start with this Master Shopping List. Before heading to the store, cross out the things you see in your refrigerator. You will not forget milk or bread anymore and believe it or not, you will be playing with the Set Theory.

The products on your list that you need to buy will be a Complement Set of all the products you crossed out because you have them. Every time you discover a new product that you like – expand your original set. If you prefer to keep separate lists for different stores, such as wholesale and local supermarkets, fair enough. There is probably some overlap between those lists. To avoid buying twice, as soon as you are back from one store, cross out the duplicates from your second store list. These duplicates are intersection of your wholesale shopping set and your local supermarket set.

Set Theory applied to shopping lists

Once your universal list is in the computer, it is easy to arrange products to appear in the order you come upon them as you navigate the store. No more random dashes against store “traffic” with a full cart and two kids in tow. And who knows, you may start enjoying it so much that you would not mind food shopping twice a week. :)

Would you like to read more from The Math Mom? Here are a few stories for Valentines Day: The Math of Dating - Mark Yourself Excelled, The Math of Ex.

Discover out where to buy kindle for the best possible cost available from our evaluation and opinions,
we explain to you the best offers available for the kindle.
Below you will discover the best offers and suggestions for Kindle.
If you want to know where to buy a Kindle for less expensive cost, you are at the right place........

2. In line Coach Outlet Online is bringing Michael Kors Outlet unique Coach Factory Outlet to a Toms Shoes USA shoe for Cheap Jerseys Spring/Michael Kors Outlet 2014 Coach Factory Outlet, and this Coach Outlet, it's a Coach Outlet. The Coach Outlet Sale Sandal Giuseppe Zanotti Outlet.Supermodel mom Coach Factory Outlet was Coach Factory Outlet Online being all kinds of hot this weekend Coach Outlet she Coach Store Online out in a Michael Kors Outlet-turning, Celine Outlet I did, I was Celine Bags possessed by Fitflops Flipflops suit madness.Fitflops USA-there string Michael Kors during Michael Kors Store vacation in Tomss Hoes Bahamas. Fitflop Footwear by her family, the 40-year-old looked happy and relaxed - Fitflops Outlet, uh, did we Fitflops Sandals super hot? - as she Giuseppe Zanotti by the pool.I've Giuseppe Zanotti Designer making my own vanilla extract for years. I love it! It's cost-effective, and in my opinion, Vanilla extract is also (easily) the most used extract in my Prada Outlet , sort of pretty (although it kind of looks like spiders too) tastes way better than imitation vanilla extract.

3. The pursuit of truth and beauty is a sphere of activity in which we are permitted to remain children all our lives. natural ways to make your boobs bigger | perdre du poids rapidemen

4. rolex watches uk, http://www.rolexwatches-uk.co.uk/
michael kors outlet, http://michaelkors.outletonlinestores.us.com/
chanel outlet, http://www.chaneloutletstore.us.com/
michael kors outlet, http://www.michaelkorsoutlets.uk/
polo ralph lauren, http://www.poloralphlauren.us.org/
coach handbags, http://www.coachhandbagsoutletonline.us.com/
coach outlet, http://www.coachoutletstores.com.co/
nike outlet store, http://www.nikeoutletstore.us/
nike air max uk, http://www.nikeairmaxshoes.org.uk/
nike roshe, http://www.nikerosherunshoes.co.uk/
chanel handbags, http://www.chanelhandbags-outlet.co.uk/
thomas sabo uk, http://www.thomassabos.co.uk/
calvin klein underwear, http://www.calvinklein.in.net/
coach outlet, http://www.coachoutletus.us/
louis vuitton handbags, http://www.louisvuittonhandbag.us/
replica watches, http://www.replicawatchesforsale.us.com/
cheap wedding dresses, http://www.cheap-weddingdresses.net/
michael kors handbags, http://www.michaelkorshandbagsoutletstore.us.com/
yoga pants, http://www.yogapants.us.com/
karen millen dresses, http://www.karenmillendressesoutlets.co.uk/
ray ban sunglasses, http://www.raybansunglassesonline.us.com/
mbt shoes, http://www.mbtshoesoutlet.us.com/
tory burch outlet, http://www.toryburchoutletonline.in.net/
oakley sunglasses, http://www.wholesaleoakleysunglasses.us.com/
20151012caihuali

5. I feel quite blessed to have seen your web page and look forward to tons of more enjoyable minutes reading here.
software boekhouding
Boekhoud Programma

6. I 'd claim that we website visitors are rather fortunate to live in a superb site with so many marvellous people with very helpful concepts.
Bingo Football pools

7. My extensive internet look up has at the end of the day been recognized with good points to write about with my friends and family.
Uk stairs
Glass staircase uk

8. I am also commenting to let you understand what a impressive encounter my girl encountered using your web site.
Panamera porsche

9. She even learned a wide variety of issues, with the inclusion of what it is like to possess an incredible helping mood to let the others with ease know specific impossible subject areas.
Video production Lexington KY
Social media Lexington KY
Social media management Lexington KY
Social media companies Lexington KY

10. She even learned a wide variety of issues, with the inclusion of what it is like to possess an incredible helping mood to let the others with ease know specific impossible subject areas.
cardiologist In Los Angeles
cardiologist In Los Angeles
Varicose Veins Los Angeles CA
Leg pain treatment Los Angeles CA

11. I definitely wanted to post a simple comment to say thanks to you for all the pleasant instructions you are writing at this website.
Billy B Web Designs Edmonton

12. I wanted to create you this little note so as to give thanks the moment again for all the gorgeous basics you've discussed here.
Web Designs Edmonton

13. Your blog is my stepping stone, my friend.
contact form, snapchat emoji