Teacher professional development and classroom resources across the curriculum

Teacher professional development and classroom resources across the curriculum

Search
MENU
Learning Math Home
Number and Operations Session 1: What Is a Number System?
 
Session 1 Part A Part B Part C Homework
 
Glossary
numbers Site Map
Session 1 Materials:
Notes
Solutions
Video

Session 1, Part A:
A Simpler Number System

In This Part: Addition in Units Digit Arithmetic | Inverse, Identity, and Closure
Multiplication in Units Digit Arithmetic | Multiplicative Inverse and Identity

Problem A8

  

Fill in the multiplication table below using units digit arithmetic. For example, in our regular system, 6 • 3 = 18. But in units digit arithmetic, we are only interested in the units digit, so in this system, 6 • 3 = 8.

•

0

1

2

3

4

5

6

7

8

9

0

1

2

3

4

5

6

7

8

9

show answers

 

Problem A9

Solution  

a. 

What patterns do you observe among the numbers in your table?

b. 

Why do you think these patterns occur?


Next > Part A (Continued): Multiplicative Inverse and Identity

Learning Math Home | Number Home | Glossary | Map | ©

Session 1: Index | Notes | Solutions | Video

Home | Catalog | About Us | Search | Contact Us | Site Map

| Follow The Annenberg Learner on Facebook

© Annenberg Foundation 2013. All rights reserved. Privacy Policy