Second Grade Nest: Teaching NBT for 1st and 2nd

Sunday, December 20, 2015

Teaching NBT for 1st and 2nd

Place value has evolved since Common Core came around. It's not just tens and ones houses anymore. The understanding between how hundreds, tens, and ones make up and change numbers is what NBT is all about. NBT expands past place value, too. Within this domain, you're using place value to add double and triple digit numbers, compare two different numbers, work within a 100s chart, and more!

I'm rallying up some fabulous ideas I have found from other teachers and old lessons that I have also taught. 

Learning The Hundreds Chart
The NBT standard in first grade works has the students working with a 120 chart. They need to be able to move around the hundreds chart, knowing how adding tens and ones correlates with the numbers on the chart.
Here is a window activity that helps student quickly locate ten more and ten less than a number as well as one more and one less.

This hundreds chart puzzle helps test students knowledge of numbers on a hundreds chart. Since the pieces are cut into different groups of numbers, students will have to use their place value brains to place the sets together.

Place Value With Base Ten Blocks
Hundreds, tens, and ones are best learned with place value blocks. Representing 2 and 3 digit numbers with base ten blocks really help solidify a student's grasp on place value. 

 I love this activity where students use a tens chart and super-sized base ten blocks to represent a number.

 (Source: Second Grade NBT Centers)

 (Source: Second Grade NBT Centers)

Here are three different base ten activities using base ten blocks from my store!

Representing Numbers in Different Ways
Number names, base ten blocks, standard form, expanded form. 
So many ways to show a number! And all the ways help students perfect their place value.
(No source linked. Anyone recognize?)

2-Digit Addition and Subtraction with Place Value
 This is such a difficult topic to teach, but if you set up students with a firm grasp on place value, double and triple digit math helps. We always start with adding tens. 
Base ten blocks help a TON when teaching. It helps tie together the lessons from place value and their new big skill.
(Source: Last year's post)

My kiddos always called this the "T". They felt very comfortable with this T. It helped split the problem up for them. Once we started working without it, they would write it on themselves. It took a while for them to get comfortable enough without the T, but by the end of the year, they were experts! 

Here are some of my resources to help teach NBT! 

If you're interested in bundles with other CCSS standards, there are links in each description to the bundles!  

Thanks for reading! I hope you got some new ideas to use.


  1. Great activities and resources--thanks for sharing!!

  2. Love these, can't wait to try them out!

  3. I'm a retired teacher....began in 1974! What do the letters NBT stand for? New Base Ten, perhaps?