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2nd Grade Number Activities

2nd Grade Math Vocabulary Resources
Addition and Subtraction Strategies e-Book
2nd Grade Math Journal

This page provides examples 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 elicit a range of responses and provide opportunities for students to communicate their reasoning and mathematical thinking. Instructions for each task are typed in large print and written in child-friendly language to enable students to work on activities independently after a brief introduction to the task. All files for the 2nd Grade Number Activities listed are in PDF format and can be accessed using Adobe Reader. For more 2nd Grade math ideas click on the above eBook covers.


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.OA1 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.

Possible Activities:
Add to: Change Unknown Problems (to 100)
Add to: Start Unknown Problems (to 100)
Take From: Change Unknown Problems (to 100)
Take From: Start Unknown Problems (to 100 

Word Problems (One Step)
Word Problems (Two Step)

Math Read Aloud Task Cards:
One Hunter
P. Bear's New Year's Party
The Napping House

Add and subtract within 20
2.OA2 Fluently add and subtract within 20 using mental strategies. By end of Grade 2, know from memory all sums of two one-digit numbers.

Possible Activities:
Doubles Bump
Near 20
Magic Star Puzzle
Magic Triangles
Magic Square
Nine Plus
Fact Family House
Doubles Plus One
Doubles Minus One
Eleven More
Four in a Row with Near Doubles Ver. 1
Four in a Row with Near Doubles Ver. 2
Number Relationship Mat

Math Read Aloud Task Card:
Two of Everything
Free 2nd Grade Math Games!
Doubles Plus One
Nine Plus Game

Work with equal groups of objects to gain foundations for multiplication
2.OA3 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.

Possible Activities:
Even Odd Pattern Block Grab

Even Odd Grab
Even Odd Song
Odd and Even Read-Alouds

Even/Odd Song
2nd Grade CCSS Math Resources

2.OA4 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.
Possible Activities:
Making Arrays
Making Different Sized Squares
Building Arrays


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

Understand place value
2.NBT1 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).

Possible Activities:
Representing 1/2/3 Digit Nos. with Base 10 Blocks
Order Up
Base Ten Concentration (3 Digit)
Make it Four Ways
Base 10 Concentration (3 Digit)

2.NBT2 Count within 1000; skip count by 2s, 5s, 10s, and 100s.
Possible Activities:
Skip Counting Cards
Count by Fives
Count by Tens
Counting Collections

Math Read Aloud Task Card:
Two Ways to Count to Ten
2nd Grade Number Activities

2.NBT3 Read and write numbers to 1000 using base-ten notation, number names, and expanded form.
Possible Activities:
Make 6 Numbers
Number Word Concentration
Representing Numbers in Four Ways
Number Writing Barrier Game
Roll 3 Digits

2.NBT4 Compare two three-digit numbers based on meanings of the hundreds, tens, and ones digits, using >, =, and < symbols.
Possible Activities:
Comparing 3 Digit Numbers
Place Value Challenge (3 Digits)

K-2 Addition and Subtraction Strategies eBook


Use place value understanding and properties of operations to add and subtract
2.NBT5 Fluently add and subtract within 100 using strategies based on place value, properties of operations, and/or the relationship between addition and subtraction.

Possible Activities:
Subtraction Strategy: Counting Up
 
2 Digit Addition Split

2 Digit Subtraction Split
Four in a Row with Near Doubles (Version 2)
Four in a Row with Near Doubles (Version 3)

Keep on Doubling
Number Wheel Spin
Near 100
2 Digit Add. & Subtraction on the Empty Number Line

2.NBT6 Add up to four two-digit numbers using strategies based on place value and properties of operations.
Possible Activities:
Make 100
Two-digit Addition Word Problems

2.NBT7 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.

Possible Activities:
2 Digit Addition Trains

2 Digit Addition Trains (with exchanging)
Base Ten Pictures
Base Ten Bag: Addition
Base Ten Bag: Subtraction

Base Ten Buildings
3 Digit Addition Split
3 Digit Subtraction Split
Friendly Numbers: Subtraction

2.NBT8 Mentally add 10 or 100 to a given number 100-900 and mentally subtract 10 or 100 from a given number 100-900.

Possible Activities:
+10 Skip Counting Paths

Add and Subtract 100 on the Number Line
Race Around (+10) Ver.1

Race Around (+10) Ver.2
Race Around (-10) Ver.1
Race Around (-10) Ver.2

2.NBT9 Explain why addition and subtraction strategies work, using place value and the properties of operations.
Possible Activities:
Finding Sums 


More 2nd Grade Number Read-Alouds


More 2nd Grade Number Resources





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