1.NR.2Addition & Subtraction Relationship

Expectations

• 1.NR.2.1

  Use a variety of strategies to solve addition and subtraction problems within 20.

• 1.NR.2.2

  Use pictures, drawings, and equations to develop strategies for addition and subtraction within 20 by exploring strings of related problems.

• 1.NR.2.3

  Recognize the inverse relationship between subtraction and addition within 20 and use this inverse relationship to solve authentic problems.

• 1.NR.2.4

  Fluently add and subtract within 10 using a variety of strategies.

• 1.NR.2.5

  Use the meaning of the equal sign to determine whether equations involving addition and subtraction are true or false.

• 1.NR.2.6

  Determine the unknown whole number in an addition or subtraction equation relating to three whole numbers.

• 1.NR.2.7

  Apply properties of operations as strategies to solve addition and subtraction problem situations within 20.

Georgia Milestones coverage

No Georgia Milestones blueprint cites this standard.

The same standard across grades

1. Kindergarten · K.NR.2

   Use count sequences within 100 to count forward and backward in sequence.

2. Grade 1 · 1.NR.2 (this standard)

   Explain the relationship between addition and subtraction and apply the properties of operations to solve real-life addition and subtraction problems within 20.

3. Grade 2 · 2.NR.2

   Apply multiple part-whole strategies, properties of operations and place value understanding to solve real-life, mathematical problems involving addition and subtraction within 1,000.

4. Grade 4 · 4.NR.2

   Using part-whole strategies, solve problems involving addition and subtraction through the hundred-thousands place, as well as multiplication and division of multi-digit whole numbers presented in real-life, mathematical situations.

5. Grade 5 · 5.NR.2

   Multiply and divide multi-digit whole numbers to solve relevant, mathematical problems.

6. Grade 6 · 6.NR.2

   Apply operations with whole numbers, fractions and decimals within relevant applications.

7. Grade 8 · 8.NR.2

   Solve problems involving radicals and integer exponents including relevant application situations; apply place value understanding with scientific notation and use scientific notation to explain real phenomena.