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.

**Represent and solve problems involving addition and subtraction**

**2.OA.A.1** Use addition and subtraction within 100 to solve one and two step word problems involving situations of adding to, taking from, putting together, taking apart, and comparing, with unknowns in all positions, e.g. by using drawings and equations with a symbol for the unknown number to represent the problem.

Word Problems: Add To: Result Unknown (within 100)

Word Problems: Take From: Result Unknown (within 100)

Literature Link: Two of Everything

Literature Link: The Napping House

Literature Link: Counting Crocodiles

Literature Link: Night Noises

Literature Link: The Shopping Basket

Literature Link: My Little Sister Ate One Hare

**Add and subtract within 20**

Doubles Plus Two (ver. 1)

The Difference Game (ver. 2)

**2.OA.C.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.

Even Odd Scoop

Odd and Even Chase

**2.OA.C.4 **Use addition to find the total number of objects arranged in rectangular arrays with up to 5 rows and up to 5 columns; write an equation to express the total as a sum of equal addends.

Roll a Rectangular Array

Array Match (Set 1)

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

Skip Counting Patterns

Count by Fives (v.2)

**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)

**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.

Four in a Line with Near Doubles

Make a Ten Path (ver. 2)

**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 on an Open Number Line (ver. 1)

**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.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.