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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 three-digit 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).
Count By 100s Hundreds - Visual Representation Place Value Place Value to Word Form Match
Place Value Place Value    
2.NBT.2. Count within 1000; skip-count by 5s, 10s, and 100s.

Hundreds Chart with Leaves      
       


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

Expanded Form of Numbers Visual Representation of 3 Digit Numbers
Expanded Form Expanded Form
Expanded Notation Expanded Notation


2.NBT.4. Compare two three-digit 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.
Friends That Make 10 Number Friends That Make Ten with Leaves
Two Digit Word Problems Two Digit Addition Word Problems With Prompt Fading
Add Tens and ONes Add Tens and Ones
Leaf Addition Task Cards Leaf Addition Task Cards
  • 2.NBT.6. Add up to four two-digit numbers using strategies based on place value and properties of operations.
Two Digit Addition Add a One Digit Number to a Two Digit Number with Regrouping
Two Digit Addition Add a One Digit Number to a Two Digit Number with Regrouping
Add Two Digit Numbers Add Two Digit Numbers With Regrouping - Includes Visual Prompts
Add Two Two Digit Numbers Add Two Digit Numbers With Regrouping - Includes Visual Prompts
Add Two Two Digit Numbers 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 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.
Add Within 1000 Add Three Digit Numbers Without Regrouping
Add 3 Digits With 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 10 to 3 Digit Numbers 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 Addition Facts
Related Subtraction Facts Related Subtraction Facts
Fact Families Fact Families

 


Math Worksheets

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