Go Math!
Chapter 8: Two-Digit Addition and Subtraction
Chapter 8 Essential Question:
How can you add and subtract two-digit numbers?
Chapter 8 Objectives:
Students will...
- Draw a model to add and subtract tens.
- Use a hundred chart to find sums.
- Use concrete models to add ones or tens to a two-digit number.
- Make a ten to add a two-digit number and a one-digit number.
- Use tens and ones to add two-digit numbers.
- Use place value understanding and properties of operations to add and subtract.
- Add and subtract within 100, including continued practice with facts within 20.
GO Math! is Online
Resources are available to support your child's learning in our Math Program. Just click the link to log in: https://www-k6.thinkcentral.com. Be sure to use your child's unique username and password.
iTools Primary
Please use the attached link to access hands-on manipulatives...https://www-k6.thinkcentral.com/content/hsp/math/hspmath/na/common/itools_pri_9780547584973_/index.html. These tools are a great way to model and act out math!
Interactive Student Edition-This is a great way to preview or review the math skills for the chapter!
- Lesson 8.1- Add and Subtact within 20
- Lesson 8.2- Hands On: Add Tens
- Lesson 8.3- Hands On: Subtract Tens
- Lesson 8.4- Use a Hundred Chart to Add
- Lesson 8.5- Hands On: Use Models to Add
- Lesson 8.6- Hands On: Make Ten to Add
- Lesson 8.7- Hands On: Use Place Value to Add
- Lesson 8.8- Problem Solving: Addition Word Problems
- Lesson 8.9- Related Addition and Subtraction
- Lesson 8.10- Practice Addition and Subtraction
Math On the Spot Videos-Cute videos that model problems within each lesson.
- Lesson 8.1- Add and Subtact within 20
- Lesson 8.2- Hands On: Add Tens
- Lesson 8.3- Hands On: Subtract Tens
- Lesson 8.4- Use a Hundred Chart to Add
- Lesson 8.5- Hands On: Use Models to Add
- Lesson 8.6- Hands On: Make Ten to Add
- Lesson 8.7- Hands On: Use Place Value to Add
- Lesson 8.8- Problem Solving: Addition Word Problems
- Lesson 8.9- Related Addition and Subtraction
- Lesson 8.10- Practice Addition and Subtraction
Animated Math Models-Practice some of your math skills with Curious George!
Mega Math Games-Fun games that reinforce concepts taught within the chapter.
- Lesson 8.1- Country Countdown, Block Busters- Level E
- Lesson 8.1- Country Countdown, Block Busters- Level F
- Lesson 8.1- Numberopolis, Carnival Stories- Level M
- Lesson 8.2- Country Countdown, Block Busters- Level J
- Lesson 8.3- Country Countdown, Block Busters- Level O
- Lesson 8.6- Country Countdown, Counting Critters- Level Q
- Lesson 8.9 & 8.9- Numberopolis, Carnival Stories- Level P
- Lesson 8.9- Numberopolis, Carnival Stories- Level Q