# Number Sense Blog

By Mathnasium | Added Jan 15, 2020

Q: What begins with E ends with E and has one letter in it?
A: An envelope!

People use math every day...even when writing letters! If you need to know how many stamps to buy, math tutoring after school can help give you the skills to figure that out. If you want to go beyond what you’ll find in most kids learning centers, our weekly word problem challenge is the right way to do it!

This week’s word problem gives students the opportunity to practice real-world math skills such as multiplication, division, addition and subtraction. Take a look at the question below and see if you can work out the solution. We know you can do it!

Question: Lucas had 24 stamps. He sent 4 cards with 2 stamps each. How many stamps does Lucas have left?

When you're ready, look below to check your solution against ours.

Solution: Lucas uses 2 stamps, 4 times to send the cards. That means he uses 2 × 4 = 8 stamps. So, Lucas has 24 – 8 = 16 stamps left over.

### Favorites

Bedtime Math: http://bedtimemath.org/

National PTA: http://www.pta.org/

NCTM: http://www.nctm.org/

Numberphile: http://www.numberphile.com/

PTO Today: http://www.ptotoday.com/

STEM Connector: http://blog.stemconnector.org/

Before I came to Mathnasium, I could sum up everything I felt about math in one word: 'EVIL!' I hated math. ... Mathnasium has been my safe haven. They truly have shown me the light when it came to addressing my fear and provided me with the tools that I need to rebuild my prior knowledge so that I won't forget it. Math is no longer a subject I shy away from but it is a subject I can boldly accept and understand.

Roxanne, 12th grade