2nd Grade Number Activities

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This page provides samples of 2nd Grade Number Activities aligned with the Common Core State Standards. All activities are suitable for use in Math Centers, small group or whole class settings and are designed to  provide opportunities for students to communicate their reasoning and mathematical thinking. All sample files are in PDF format
. Sample activities listed in blue are available for immediate download. Activities listed in **grey are included in our 2nd Grade Math Centers eBook .


                2nd GRADE NUMBER ACTIVITIES: OPERATIONS AND ALGEBRAIC THINKING

2nd Grade Numbers of the Week Use for morning work or as homework.

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.

Sample Activities:
Add To: Result Unknown (within 100)
Take From: Result Unknown (within 100)
Math Read Aloud Task Cards:
One Hunter
P. Bear's New Year's Party
The Napping House
Two of Everything

Also included in 2nd Grade Math Centers:
** Add to: Change Unknown Word Problems (within 100)
** Add To: Start Unknown Word Problems (within 100)
** Take From: Change Unknown Word Problems (within 100)
** Take From: Start Unknown Word Problems 
(within 100)
** Put Together/Take Apart: Total Unknown Word Problems 
(within 100)
** Put Together/Take Apart: Addend Unknown Word Problems (within 100)
** Compare: Difference Unknown Word Problems 
(within 100)
** Compare: Bigger Unknown Word Problems 
(within 100)
** Compare: Smaller Unknown Word Problems 
(within 100)
** Mixed Addition/Subtraction Two Step Word Problems 
(within 100)


2nd Grade Number Read-Alouds


Add and subtract within 20
2.OA.B.2 Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

Sample Activities:
Find Ten
Making Ten (ver. 1)

Doubles Cover Up (ver. 2)
Four in a Row with Near Doubles
Four in a Row Subtraction

Part Part Whole Cards
11 More
Magic Squares
Sum Search
Also included in 2nd Grade Math Centers:
** Doubles Bump
** Doubles Memory
** Doubles Cover Up (ver.1)
** Doubles Plus One (ver. 1)
** Doubles Plus Two (ver. 1)
** Doubles Minus One (ver. 1)
** Doubles Minus Two (ver. 1)

** Making Ten (ver. 2 & 3)
** Make a Ten Path (ver. 1)
** The Difference Game (ver. 1-4)
** Four in a Row Subtraction
** Number Wheel Spin (ver. 1)
** Number Relationship Mat
** Near 20

** Magic Star 
** Magic Triangle

Nine Plus Game
Magic Triangles

Work with equal groups of objects to gain foundations for multiplication
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.

Sample Activities:
Even Odd Scoop
Math Read Aloud Task Cards:
Even Steven and Odd Todd
Also included in 2nd Grade Math Centers:
** Even Slap!
** Odd and Even Chase

2nd Grade Number Activities

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.
Sample Activities:
Roll a Rectangular Array
Making Different Sized Squares
Also included in 2nd Grade Math Centers:
** Making Rectangular Arrays
** Array Cards
** Array Match



2nd Grade EBooks

2nd Grade Math Journals
K-2 Addition and Subtraction Strategies
Math Projects K-2
Math Tool Kit

                         2nd GRADE NUMBER ACTIVITIES: NUMBER AND OPERATIONS IN BASE TEN

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).
Sample Activities:
Make Ten Bundles
Base 10 Concentration (ver.2)
Also included in 2nd Grade Math Centers:
** Representing Multiples of 100
** Race to 100
** Race to Zero

** Representing Numbers with Four Blocks
** Five Ways

2.NBT.A.2 Count within 1000; skip count by 2s, 5s, 10s, and 100s.
Sample Activities:
Counting Collections
Count by Fives (ver. 4)
Math Read Aloud Task Card:
Two Ways to Count to Ten
Also included in 2nd Grade Math Centers:
** Count by Fives (ver. 1-3)
** Count by Tens (ver. 1- 4)
** Skip Counting Cards
** My Skip Counting Patterns Book



2.NBT.A.3 Read and write numbers to 1000 using base-ten notation, number names, and expanded form.
Sample Activities:
Make Six Numbers 
Roll 3 Digits
Numeral Writing Barrier Game
Also included in 2nd Grade Math Centers:
** Number Word Concentration

2.NBT.A.4 Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols.
Sample Activities:
Comparing 3 Digit Numbers
Place Value Challenge (ver. 1)
Also included in 2nd Grade Math Centers:
** Build and Compare
** Order Up
** Place Value Triangle (ver. 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.

Sample Activities:
Keep on Doubling
2-Digit Addition Split
Also included in 2nd Grade Math Centers:
** 2 Digit Subtraction Split 
** Base Ten Bag: Subtraction
** 2 Digit Addition Trains (ver. 1 & 2)
** Doubles Plus One (ver. 2)
** Doubles Plus Two (ver. 2)
** Doubles Minus One (ver. 2)
** Doubles Minus Two (ver. 2)
** Four in a Row with Near Doubles
** Make a Ten Cover Up (ver. 2)
** Make a Ten Path (ver. 2)

** Number Wheel Spin (ver. 2)
** Four in a Row with Near Doubles (ver. 2 & 3) 
** Close to One Hundred
** Close to Zero 
** 2-Digit Addition on an Open Number Line (ver. 1 & 2)
** 2-Digit Subtraction on an Open Number Line (ver. 1-3)

2-Digit Addition on an Open Number Line

2.NBT.B.6 Add up to four two-digit numbers using strategies based on place value and properties of operations.
Sample Activity:
Make 100
Also included in 2nd Grade Math Centers:
** Add Three Addends
** Add Four Addends
** Three Addend Word Problems


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.
Sample Activities:
Base Ten Bag: Addition
Base Ten Pictures
3-Digit Addition Split
Also included in 2nd Grade Math Centers:
** 3-Digit Subtraction Split
** Base Ten Bag: Subtraction
** Base Ten Buildings
** Make a Ten Path (ver. 3)

** 3-Digit Addition on an Open Number Line (ver. 1 & 2)
** 3-Digit Subtraction on an Open Number Line (ver. 1-3)

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.
Sample Activities:
Add 10 on a Number Line (3 digit)
Subtract 10 and 100
Also included in 2nd Grade Math Centers:
** Subtract 10 on a Number Line
** Add 100 on a Number Line
** Subtract 100 on a Number Line
** Add 10 and 100
** Subtract 10 and 100

** Race Around + 10 (ver. 2)
** Race Around - 10 (ver. 2 & 3)
** Add 10 Number Paths
** Subtract 10 Number Paths

2.NBT.B.9 Explain why addition and subtraction strategies work, using place value and the properties of operations.
Included in 2nd Grade Math Centers:
** Explaining Addition and Subtraction Strategies (20 Task Cards)


More 2nd Grade Number Resources


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