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Preteach SkillsRegroup Addition and Subtraction
2.NBT.7*Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting threedigit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.
Place Value Activities 2.NBT.1
100 can be thought of as a bundle of ten tens — called a “hundred.”
The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, or nine hundreds (and 0 tens and 0 ones).
Math Journal: Choose a number between 100 and 999. Show how many ways you can represent this number.
Math Stations: Place Value Challenge, Word Problems
Place Value Reviewfor teacher 
Practice Expanded Form 
Place Value Place Cards 
Fruit Shoot Place Value 
Using Models to Represent Numcers 
Building Hundreds Numbers

Abacus Place ValueAddition and Subtraction Practice

Regrouping Addition and Subtraction 
Addition Word Problems

Skip Counting 2.NBT.2*
Count within 1000; skipcount by 5s, 10s, and 100s. Teaching Skip Counting; Skip Counting Progression, Second Grade Math Skills and Concepts,
Mini Lessons: Skip Counting;
Skip Counting 
Grand Slam Math

Add and Subtract Within 20.2.OA.2*
Add and subtract within 20. Fluently add and subtract within 20 using mental strategies.1 By end of Grade 2, know from memory all sums of two onedigit numbers.
Printable Addition Table; Printable Subtraction Table; Flash Cards; Worksheets
Math Stations: Making Arrays, Pattern Block Squares,
Add and Subtract Mentally 
Number Bonds 
Addition to 19 
Subtraction to 19 
Addition and Subtraction: Mixed Signs 
Tens Frames Practice 
Representing Numbers
2.NBT.3*Read and write numbers to 1000 using baseten numerals, number names, and expanded form.
Math Stations: Representing Numbers in Four Ways; Number Word Concentration; Subitizing Quantities
Math Journals:
Choose a 3digit number that has a 4 in the hundreds place. How many ways can you represent this number?
A Lucky Place 
Cookie Dough: Spell the Number 
Odd or Even Numbers2.OA.3*
Determine whether a group of objects (up to 20) has an odd or even number of members, e.g., by pairing objects or counting them by 2s; write an equation to express an even number as a sum of two equal addends.


Activities for Teaching Numbers 
Odd or Even  Crickweb
Comparing Numbers
2.NBT.4 – Compare two threedigit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols to record the results of comparisons.
Worksheets: Chapter 1 Comparing Numbers; Comparing Numbers;
Online Visual Teaching Tools: Number Compare; Number line Jump; Number line Adding;
Which Number is Greater; World Shaker 10 more 10 less 1more 1 less
Comparing Number Values 
Using Comparing Symbols 