This page provides sample 2nd Grade Number tasks and games from our 2nd Grade Math Centers eBook. Try out the samples listed in blue under each Common Core State Standard or download the eBook and have all the 2nd Grade Number, Geometry, Measurement and Data Centers you’ll need for the entire school year in one convenient digital file. With over 160 easy-prep, engaging centers this resource will simplify your math lesson planning and make hands-on math instruction an integral part of your classroom.

Teaching in a state that is implementing their own specific math standards? Download our 2nd Grade Correlations document for cross-referenced tables outlining the alignment of each state's standards with the CCSS-M, as well as the page numbers in our 2nd Grade Math Centers eBook related to each standard.

**2nd Grade Numbers of the Week** (Use for morning work or as homework)**Represent and solve problems involving addition and subtraction**

Add To: Result Unknown Word Problems (within 100)

Take From: Result Unknown Word Problems (within 100)

Math Literature Link: Two of Everything

Math Literature Link: The Napping House

Math Literature Link: Night Noises

Math Literature Link: The Shopping Basket

Math Literature Link: My Little Sister Ate One Hare

**Understand place value**

**2.NBT.A.1 **Understand that the three digits of a three-digit number represent amounts of hundreds, tens, and ones. Understand the following as special cases:

a. 100 can be thought of as a bundle of ten tens – called a “hundred.”

b. The numbers 100, 200, 300, 400, 500, 600, 700, 800, 900 refer to one, two, three, four, five, six, seven, eight, nine hundreds (and 0 tens and 0 ones).**Race to 100**Base 10 Concentration (v.2)

**2.NBT.A.2 **Count within 1000; skip count by 5s,10s, and 100s.

Counting Collections

Count by Fives (v.4)

Math Literature Link: Two Ways to Count to Ten

**2.NBT.A.3 **Read and write numbers to 1000 using base-ten notation, number names, and expanded form.

Roll 3 Digits

Numeral Writing Barrier Game

**2.NBT.A.4 **Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols.

Comparing 3 Digit Numbers

Place Value Challenge (v.1)

**Use place value understanding and properties of operations to add and subtract**

**2.NBT.B.5** Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

2-Digit Addition Trains (v.1-2)

Doubles Plus One (v.2)

**2.NBT.B.6 **Add up to four two-digit numbers using strategies based on place value and properties of operations.

Make 100

**2.NBT.B.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 three-digit 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.

Base Ten Bag: Addition

Base Ten Pictures

3-Digit Addition Split

**2.NBT.B.8 Mentally add 10 or 100 to a given number 100-900 and mentally subtract 10 or 100 from a given number 100-900.**

**2.NBT.B.9 **Explain why addition and subtraction strategies work, using place value and the properties of operations.