Unit 2 - Building Base 10 Concepts

Content Emphasis/ Big Ideas

In this unit, students continue to count and compare quantities, and work with place value concepts including rounding. Students also apply their knowledge of patterns to extend their understanding of our base-ten number system.

Standards:

• MTH.G2.1.a Read, write, and identify the place value of each digit in a two digit numeral, with and without models
• MTH.G2.1.b Identify the number that is 10 more and 10 less than a given number up to 99
•  MTH.G2.1.c Compare and order whole numbers between 0 and 99 
• MTH.G2.1.d Round two-digit numbers to the nearest ten
•  MTH.G2.16 Identify, describe, create, extend and transfer patterns found in objects, pictures and numbers

Skills:

1. Place Value of Two Digit Numbers
2. Ten More/Less than Two Digit Numbers
3. Round Two Digit Numbers to the Nearest 10

Place Value of Two Digit Numbers

Instructional Videos

Introduction to Place Value

Practice Items

2 Digit Place Value Challenge

Skills Based Games

Base 10 Fun!

Ten More/Less than Two Digit Numbers

Instructional Video

Adding Ten to a Number

Subract Ten Using Place Value

Practice Items

Adding 1 or 10 to a number

Subtract 1 or 10

Skill Based Game

Adding 10 Depth Charger

Adding Multiples of 10

Round Two Digit Numbers to the Nearest 10

Instructional Videos

Practice Item

I Know IT! Round to the nearest 10

Skill Based Game

Math Nook Cross Traffic Rounding 10

Additional Resources:

STMath (60 Minutes recommended per week)

Math at Home