# Number Sense Blog

### Win A Prize: October 13 is Train Your Brain Day

Oct 13, 2015

Did you know that spending a little time every day thinking through mind-challenging puzzles helps keep your mental processes sharp and agile well into old age? If you like good brainteasers and winning cool prizes as much as we do, we've got a ne...

### It's Back to the Future Day!

Oct 21, 2015

Grab your hoverboards—the future is HERE: October 21, 2015 is Back to the Future Day! For background purposes, in Back to the Future II, Marty McFly travels forward in time from 1985, landing in the future on October 21, 2015.
Today, we’re cele...

### Holy Moley! October 23 is National Mole Day!

Oct 23, 2015

It’s a big day for chemistry (and math!) enthusiasts—October 23 is National Mole Day! Before images of burrowing, subterranean rodents with limited vision come to mind, allow us to offer a brief explanation of this very big number.
In chemistry...

### Meow! October 29 is National Cat Day!

Oct 29, 2015

Feline aficionados rejoice—October 29 is National Cat Day! It’s an absolutely purrfect day for word problems, so put on your thinking caps and kitty ears right meow and celebrate with us!
Debora has 8 cats. Half of her cats have 6 whiskers each...

### Word Problem Wednesday - Report Card Edition

Nov 4, 2015

As report cards for the first half of the fall semester make their way home, here's a report card-themed word problem!
A grade point average is calculated using points. An A is worth 4 points, a B is worth 3 points, a C is worth 2 points, a D i...

### A Different Kind of Pie

Nov 9, 2015

With Thanksgiving on the horizon, it isn’t surprising that we’ve been thinking a lot about pie lately, and by extension—you guessed it—pie charts! When conducting a survey, presenting your data (your results, the information you collected) visuall...

### A Very Juicy Word Problem

Nov 10, 2015

Today’s word problem is our little homage to a school cafeteria favorite—the juice carton! Give it a try—we’ll update this article with the answer tomorrow.
A cafeteria has three different kinds of juice cartons. 1/6 of the juice cartons contai...

### Spread the Love: November 13 is World Kindness Day!

Nov 13, 2015

(Image via Bunnicula on Flickr)
In the spirit of World Kindness Day, today's word problem celebrates how one positive act has the power to inspire many more. Give it a try; we'll update this article on Monday with the answer!
You write two p...

### "Woof" Problem Wednesday!

Nov 18, 2015

We don't know about you, but there's something about wagging tails and soulful puppy eyes that makes our hearts grow soft... hence today's doggie-themed word problem featuring some very hungry dogs! Give it a try—we'll update this article with the...

### It's a Thanksgiving Word Problem Giveaway!

Nov 24, 2015

(Image via Satya Murthy on Flickr)
We’re counting down to Thanksgiving with a word problem giveaway! Solve our two Thanksgiving problems below and send in your answers to ilovemath@mathnasium.com for a chance to win an awesome Mathnasium prize ...

### Word Problem Wednesday - Oh Christmas Tree!

Dec 9, 2015

This week's word problem features one of our favorite holiday symbols—the Christmas tree! Give it a shot; we'll post the answer tomorrow!
While outside shopping for the perfect Christmas tree, Justine stands next to a tree that is 10 feet tall....

### Word Problem Wednesday: The Bicycle Edition

Dec 16, 2015

(Image source: Asja Boroš on Flickr)
This week's word problem goes out to everyone who has received or would like to receive a new bike for the holidays! Give it a try—we'll update with the answer tomorrow!
Jessica, Kalvin, and Lloyd pitch i...

### Word Problem Wednesday: HAPPY NEW YEAR!

Dec 30, 2015

It's the last Word Problem Wednesday of 2015! In the spirit of celebration, give our word problem a try... we'll update this article with the answer once we return in 2016!
Georgina is making a banner to decorate the house for a New Year’s part...

### Word Problem Wednesday: What's For Lunch?

Jan 6, 2016

It's the first Word Problem Wednesday of 2016! We're looking forward to starting 2016 off strong—and to do that, we're going to need lots of food to fuel our brains. Give our lunch-themed word problem a try—we'll update with the answer tomorrow!
...

### Word Problem Wednesday: Probability and the Lottery!

Jan 13, 2016

It's another Word Problem Wednesday! Today's word problem explores probability as it relates to the lottery. Give it a shot—we'll update this article with the answer tomorrow!
For a certain lottery, there are 20 balls numbered 1 to 20. You sele...

### Word Problem Wednesday: Find the Mystery Number!

Jan 20, 2016

(Image via Horla Varian on Flickr)
For this installment of Word Problem Wednesday, we're on the hunt for a mystery number! Using the clues below, can you figure it out? We'll update this article with the answer tomorrow!
I am a three-digit o...

### Word Problem Wednesday: Democracy!

Jan 27, 2016

Happy Word Problem Wednesday! This week's problem gives a nod to the democratic process. Give it a try—we'll update with the answer tomorrow!
There are three candidates for class president. Becky received 25% of the total votes. Charles receive...

### Word Problem Wednesday: Let's Build a Snowman!

Feb 3, 2016

This Word Problem Wednesday, we're celebrating fun in the snow! Give our wintery word problem a try; we'll update with the answer tomorrow!
Jordan and Sam are building snowmen together! Jordan rolled 17 snowballs and Sam rolled 25 snowballs. If...

### It's a Pancake Day Word Problem Giveaway!

Feb 9, 2016

We're celebrating Pancake Day with a very special, very pancakey word problem giveaway in collaboration with author and math educator Lucy Ravitch! To join, solve our word problem and submit your answer to ilovemath@mathnasium.com by Tuesday, Febr...

### Word Problem Wednesday: Chocolate!

Feb 10, 2016

Valentine's Day is just around the corner, so this installation of Word Problem Wednesday is all about our favorite sweet treat—chocolate! Give it a shot; we'll update with the answer tomorrow.
At the chocolate store, you can buy 3 boxes for $1...