Math  Common Core Standards
Second Grade
Numbers and Operations in Base Ten
Understand Place Value
2.NBT.1. Understand that the
three digits of a threedigit number represent
amounts of hundreds, tens, and ones; e.g., 706
equals 7 hundreds, 0 tens, and 6 ones. Understand
the following as special cases:
 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).
2.NBT.2. Count within 1000; skipcount by
5s, 10s, and 100s.
2.NBT.3. Read and write numbers to 1000
using baseten numerals, number names, and expanded form.
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.
Use place value understanding and properties of operations to
add and subtract
 2.NBT.5. Fluently add and subtract
within 100 using strategies based on place value, properties of
operations, and/or the relationship between addition and
subtraction.

Number Friends That Make Ten with Leaves 

Two Digit Addition Word Problems With Prompt Fading 

Add Tens and Ones 

Leaf Addition Task Cards 
 2.NBT.6. Add up to four twodigit
numbers using strategies based on place value and properties of
operations.

Add a One Digit Number to a Two Digit Number with
Regrouping 

Add a One Digit Number to a Two Digit Number with
Regrouping 

Add Two Digit Numbers With Regrouping  Includes Visual
Prompts 

Add Two Digit Numbers With Regrouping  Includes Visual
Prompts 

Add Two Digit Numbers with Regrouping
This set of worksheets has more problems per page and fewer
prompts. 
 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.

Add Three Digit Numbers Without Regrouping 

Add Three Digit Numbers With Regrouping 
 2.NBT.8. Mentally add 10 or 100 to a
given number 100–900, and mentally subtract 10 or 100 from a
given number 100–900.

Add Ten to 3 Digit Numbers  Includes Visual
Prompts 


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

Related Addition Facts 

Related Subtraction Facts 

Fact Families

Click on any of the standards on the left to create custom
worksheets or to print premade materials.