Online College Courses for Credit

Math in Focus Chapter 2

Math in Focus Chapter 2

Author: Sara Levine
See More

Try Our College Algebra Course. For FREE.

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to many different colleges and universities.*

Begin Free Trial
No credit card required

29 Sophia partners guarantee credit transfer.

314 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 26 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.


Math in Focus Chapter 2 Video 1

This video explains how to decompose numbers to help you add them together mentally.

Source: Math in Focus

Math In Focus Chapter 2.1 video 2

Here we talk about different steps we could take to add two 2-digit numbers together mentally and showing our thinking with equations.

Math in Focus Chapter 2.1 video 3

In this video we look at three different strategies we can use to show how we solve addition problems with regrouping.

Source: Math in Focus

Math in Focus Chapter 2 Video 2 - Strategy Share

Students explain how they used mental math to solve the problem 149 + 33. Students use Number Bonds to help them organize their thinking.

Source: Math in Focus