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CCSS.Math.Content.2.OA.B.2

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

  • Operations and Algebraic Thinking

  • Add and subtract within 20.

NGA Center/CCSSO
Last updated: 
2010-06-04 06:28:11

Lessons for this standard

Number Card (1-100)

Number Card (1-100)

Math_Team 
Updated: 
2016
4.5
4 Comments
  • Multiple Subjects
  • Elementary (Grades K-2)
Common Core
Double sided cards with numbers 1 to 100 and their spelling. Aligned with Common Core Standards: K.CC.1, K.CC.2, K.CC.4 Counting and Cardinality; K...
simple addition self marking Handout

simple addition self marking Handout

Math_Team 
Updated: 
2016
5
4 Comments
  • Operations and Algebraic Thinking
  • Elementary (Grades K-2)
Common Core
Simple addtion exercise which tells the child if their answer is correct. This is similar to the resource already submitted; but now you can change...
Problem solving review sheet

Problem solving review sheet

Math_Team 
Updated: 
2016
5
3 Comments
Common Core
Sheet to be used as a prompt to help the process of math problem solving. Aligned with Common Core State Standards: 1.OA.1, Operations and Algebraic...
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Related standards

Finer grained standards that are part of this one

See standard 1.OA.6 for a list of mental strategies.

NGA Center/CCSSO
Last updated: 
2021-02-04 11:48:51
Standards with the same topic and subject but for other grades

CCSS.Math.Content.1.OA.B.3

Apply properties of operations as strategies to add and subtract.

16 lessons are aligned with this standard
NGA Center/CCSSO
Last updated: 
2010-06-03 12:41:42

CCSS.Math.Content.K.OA.A.2

Solve addition and subtraction word problems, and add and subtract within 10, e.g., by using objects or drawings to represent the problem.

14 lessons are aligned with this standard
NGA Center/CCSSO
Last updated: 
2010-06-02 09:27:34

CCSS.Math.Content.1.OA.A.2

Solve word problems that call for addition of three whole numbers whose sum is less than or equal to 20, e.g., by using objects, drawings, and equations with a symbol for the unknown number to represent the problem.

5 lessons are aligned with this standard
NGA Center/CCSSO
Last updated: 
2010-06-03 12:40:50

CCSS.Math.Content.K.OA.A.1

Represent addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.

13 lessons are aligned with this standard
NGA Center/CCSSO
Last updated: 
2010-06-03 12:27:56

CCSS.Math.Content.K.OA.A.3

Decompose numbers less than or equal to 10 into pairs in more than one way, e.g., by using objects or drawings, and record each decomposition by a drawing or equation (e.g., 5 = 2 + 3 and 5 = 4 + 1).

11 lessons are aligned with this standard
NGA Center/CCSSO
Last updated: 
2010-06-02 09:27:42
View more
State-specific standards derived from this one

MA.2.OA.B.2

Fluently add and subtract within 20 using mental strategies. (See 1.OA.C.6 for a list of strategies.) By end of Grade 2, know from memory all sums of two one-digit numbers.

Colorado DOE
Last updated: 
2018-10-08 13:54:24

OA.M.2.2

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

West Virginia DOE
Last updated: 
2016-02-01 09:42:37

Math.Content.2.OA.B.2

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

Maine DOE
Last updated: 
2013-06-20 10:16:46

CCSS.Math.Content.2.OA.B.2

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

South Dakota DOE
Last updated: 
2013-06-20 16:43:22

2.OA.B.2.a

Fluently add and subtract within 20 using mental strategies.

South Dakota DOE
Last updated: 
2018-05-06 21:44:00
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