North Carolina Standard Course of Study First Grade Mathematics resources

NC.1.NBT.2.c. Demonstrate that the numbers 10, 20, 30, 40, 50, 60, 70, 80, 90 refer to one, two, three, four, five, six, seven, eight, or nine tens, with 0 ones.

Flip Charts Adding Two-digit Numbers

Flip Charts Math Grade 2

Flip Charts Place Value

Vocabulary Terms Place Value

Quiz, Flash Cards, Worksheet, Game & Study Guide Place Value

NC.1.NBT.3. Compare two two-digit numbers based on the value of the tens and ones digits, recording the results of comparisons with the symbols >, =, and <.

Flip Charts Math Grade 2

Flip Charts Place Value

Vocabulary Terms Comparing Numbers

Vocabulary Terms Counting to 999

Vocabulary Terms Greater Than, Less Than

Vocabulary Terms Ordering Numbers and Objects by Size

Vocabulary Terms Sequencing

Quiz, Flash Cards, Worksheet, Game & Study Guide Comparing Numbers

Quiz, Flash Cards, Worksheet, Game & Study Guide Counting to 999

Quiz, Flash Cards, Worksheet, Game & Study Guide Greater Than, Less Than

Quiz, Flash Cards, Worksheet, Game & Study Guide Ordering Numbers and Objects by Size

Quiz, Flash Cards, Worksheet, Game & Study Guide Sequencing

Quiz, Flash Cards, Worksheet, Game & Study Guide Using Number Line

Use place value understanding and properties of operations.

NC.1.NBT.4. Using concrete models or drawings, strategies based on place value, properties of operations, and explaining the reasoning used, add, within 100, in the following situations:

NC.1.NBT.4.a. A two-digit number and a one-digit number

Flip Charts Adding Two-digit Numbers

Flip Charts Math Grade 2

Vocabulary Terms Double Digit Addition without Regrouping

Vocabulary Terms One Less, One More

Vocabulary Terms One More, One Less

Quiz, Flash Cards, Worksheet, Game & Study Guide Double Digit Addition without Regrouping

Quiz, Flash Cards, Worksheet, Game & Study Guide One Less, One More

Quiz, Flash Cards, Worksheet, Game & Study Guide One More, One Less

Quiz, Flash Cards, Worksheet, Game & Study Guide Using Number Line

NC.1.NBT.4.b. A two-digit number and a multiple of 10

Flip Charts Adding Two-digit Numbers

Flip Charts Math Grade 2

Vocabulary Terms Double Digit Addition without Regrouping

Quiz, Flash Cards, Worksheet, Game & Study Guide Double Digit Addition without Regrouping

NC.1.NBT.6. Subtract multiples of 10 in the range 10-90 from multiples of 10 in the range 10-90, explaining the reasoning, using:

NC.1.NBT.6.b. Number lines

Flip Charts Math Grade 1

Flip Charts Math Grade 2

Flip Charts Subtracting Two-digit Numbers

Flip Charts Subtraction Facts

Quiz, Flash Cards, Worksheet, Game & Study Guide Using Number Line

NC.1.NBT.6.d. Properties of operations

Vocabulary Terms Commutative Property

Quiz, Flash Cards, Worksheet, Game & Study Guide Commutative Property

Operations and Algebraic Thinking

Represent and solve problems.

NC.1.OA.1. Represent and solve addition and subtraction word problems, within 20, with unknowns, by using objects, drawings, and equations with a symbol for the unknown number to represent the problem, when solving:

NC.1.OA.1.a. Add to/Take from-Change Unknown

Vocabulary Terms Story Problems

Quiz, Flash Cards, Worksheet, Game & Study Guide Story Problems

NC.1.OA.1.b. Put together/Take Apart-Addend Unknown

Vocabulary Terms Story Problems

Quiz, Flash Cards, Worksheet, Game & Study Guide Story Problems

NC.1.OA.1.c. Compare-Difference Unknown

Vocabulary Terms Story Problems

Quiz, Flash Cards, Worksheet, Game & Study Guide Story Problems

Understand and apply the properties of operations.

NC.1.OA.3. Apply the commutative and associative properties as strategies for solving addition problems.

Vocabulary Terms Commutative Property